Li Ang's lips curled up, and he said with a smile, "Why did my whole body ache when I woke up, but immediately get better after installing the battery?

Why did the rubber-suited figure leave sweet-smelling liquid in the wall's grooves after opening the stone wall?

Why did the f room require me to use sugarcane to make battery fluid?

The reason is very simple. The so-called battery isn't meant to provide energy to the suit I'm wearing,

but to provide energy to me.

This tube..."

He pointed to the glass cylinder on his left arm, "is actually just ordinary glucose."

"..."

Alice didn't speak, only slightly turned her head to "look" at the battery Li Ang was pointing at.

"Glucose, molecular formula C6h12o6. According to the encyclopedia, it is the most widely distributed and most important monosaccharide in nature, a polyhydroxy aldehyde, the energy source of living cells and an intermediate product of metabolism, that is, the main energy supply substance for organisms.

However, the glucose here refers to d-glucose,

while the one on my shoulder is L-glucose."

Li Ang rubbed the bridge of his nose, which was pressed by the mask, and said calmly, "The last hydroxyl position of d-glucose and L-glucose is different.

They have different chirality, are mirror images of each other, and are enantiomers.

The so-called chirality is an essential attribute of nature.

Carbon atoms have four chemical bonds that can connect four functional groups.

Since there are various functional groups, organic matter also has asymmetry, that is, chirality.

When a certain carbon atom is the chiral center, there will be two spatial structures.

The atoms of the two configurations have the same composition, but are mirror images of each other.

Just like human left and right hands, they cannot be superimposed by rotation.

R-S or D-L are usually used to identify chiral substances.

Molecules with different configurations only have changes in spatial three-dimensional structure, but their physiological and pharmacological activities may be vastly different.

For example, a drug called thalidomide,

its R-type can play a sedative role and relieve vomiting in pregnant women, so it is used as a drug to inhibit pregnancy reactions,

but the S-type has a strong teratogenic effect.

If R and S are not separated, the result will be a large number of deformed fetuses.

This tube of L-glucose is the same.

Normal d-glucose successively undergoes the anaerobic glycolysis pathway, the aerobic tricarboxylic acid cycle, and the biological oxidation process to generate carbon dioxide and water, releasing more energy, which is stored in the form of ATP.

However, the enantiomer of d-glucose, L-glucose, cannot be phosphorylated by hexokinase, that is, it cannot be utilized by normal mammals."

Li Ang pointed to his nose, "In other words, I am not a normal mammal."

Alice asked softly, "How did you know it was L-glucose..."

"The reason is very simple,"

Li Ang shrugged, "In fact, as a puzzle game, it gave me too many hints.

The envelope in room A has a lemon flavor,

E room L-menthol smells musty,

Aspartame tastes bitter,

Limonene has the same lemon fragrance as the envelope in room A."

He picked up the bottles tied to his waist with cloth strips and introduced them one by one, "Menthol is a type of cyclic monoterpene, a highly volatile essential oil produced by plants.

Menthol has a refreshing mint aroma, but its enantiomer d-menthol has a musty smell.

Asparagine is sweet, but its enantiomer r-asparagine is bitter.

Limonene has two chiral subclasses, one is lemon-flavored and the other is orange-flavored.

Before crossing the stone gate, I always smelled lemon,

but now..."

He opened the jar containing limonene, took a deep breath, and smiled at Alice, "It has turned into orange flavor.

If I'm not mistaken, one of the effects of this passage

is to invert the whole body of the entrant,

making the human body mirror-symmetric, and all protein nucleic acid molecules in the body undergo chiral inversion together.

The consequence

is that entrants cannot utilize conventional d-glucose,

but can only use artificially synthesized L-glucose as an energy source—this is why my activity time is limited to three hours,

and it is also the reason why the alchemist said that going down the well will bring sequelae, and the effect must be isolated with special clothing."

He raised his arm, pointed to the stone wall behind him with his thumb, and smiled, "Remember the password for the door in room E?

Mobius.

Take a strip of white paper, paint the back black,

then flip one end,

and connect the two ends to form a Möbius strip.

If you walk around the Möbius strip, then left becomes right, and up becomes down,

just like chiral inversion.

The well is the Möbius strip, it is the passage.

The special clothing mentioned by the alchemist is the one I am wearing—but this garment may be missing some key parts,

resulting in the fact that I did not shield the chiral inversion effect,

until I walked out of the stone wall, did I return to normal."

Li Ang said in a deep voice, "In room D, the alchemist wrote on his own calendar that on March 2nd,

he would go to Amestris for his wife to receive the Plant Alchemist Medal awarded by the president,

and also visit his teacher who has recently been studying alkylating agents.

Alkylating agents are a class of highly reactive chemical compounds, belonging to cytotoxic drugs, which can form carbonium ions or other compounds with active electrophilic groups in the body.

Then, they covalently bond with groups rich in electrons in biological macromolecules in cells, making them lose their activity or causing DNA molecules to break,

mainly used for malignant lymphoma and chronic lymphocytic leukemia,

which can correspond to what was said in the conversation, a certain disease of your sister Cyrilde.

Considering that the level of medical and chemical development in this world is not very high, and the technology of efficient chiral catalysts has not been developed,

your father should want to use the chiral inversion function of the well, or the passage, to produce chirally pure drugs to treat his youngest daughter's disease.

Unfortunately, before the final result was obtained,

tragedy happened,

forcing your father to take the most extreme measures."

Li Ang reached out and patted the stone wall of the passage, and said calmly, "This passage probably not only has the ability to reverse chirality,

but also has the function of distorting time and creating cycles.

It is like a Möbius ring that can never reach the end,

or an ouroboros that is extremely ferocious and devours its own tail out of greed.

In this passage, cause is effect, and effect is cause.

The boundaries between time and space no longer exist,

and the gap between the past and the future is completely blurred.

This mansion, this tragedy, never had a mastermind,

or rather, the only mastermind

is the alchemist himself, is myself."