Task: Please answer the multiple choice question.
Question: Which molecule has the highest Caco-2 cell permeability?
Constraint: Even if you are not sure, you must pick either a, b, c, or d without using any additional words.
Options:
a. CNC(=O)[C@H](NC(=O)[C@](O)(Cc1ccccc1)CN(Cc1ccc(Br)cc1)NC(=O)[C@H](CC(=O)OC)C(C)(C)C)C(C)(C)C
b. CCCCCCC(N)C(=O)N[C@@H](Cc1ccc(O)cc1)C(=O)N1CCC[C@@H]1C(=O)N[C@@H](Cc1c[nH]c2ccccc12)C(=O)N[C@@H](Cc1ccccc1)C(N)=O
c. Cn1c(NCCCN2CCC(CN3c4ccccc4Sc4ccc(C(=O)O)cc43)CC2)cc(=O)n(C)c1=O
d. Cn1c(=O)c2c(ncn2C)n(C)c1=O
Answer: c
Task: Please answer the multiple choice question.
Question: Which molecule has the highest {permeability__names__noun}?
Constraint: Even if you are {#uncertain|not sure!}, you must pick either {%multiple_choice_enum%2-5%aA1} without using any {#other|additional!} words.
Options:
{SMILES%permeability%}
Answer: {%multiple_choice_result}
10-[[1-[3-[(1,3-dimethyl-2,6-dioxopyrimidin-4-yl)amino]propyl]piperidin-4-yl]methyl]phenothiazine-2-carboxylic acid