Task: Please answer the multiple choice question.
Question: Which molecule has the highest Caco-2 cell effective permeability?
Constraint: Even if you are not sure, you must pick either a, b, c, or d without using any additional words.
Options:
a: O=C(NC1(C(=O)N[C@@H](Cc2ccccc2)C(=O)NCCCN2CCOCC2)CCCC1)c1cc2ccccc2s1
b: C[C@@](N)(Cc1ccc(O)c(O)c1)C(=O)O
c: NC(=S)NC[C@H]1CN(c2ccc(C3CCS(=O)(=O)CC3)c(F)c2)C(=O)O1
d: CC(C)c1c(C(=O)Nc2ccccc2)c(-c2ccccc2)c(-c2ccc(F)cc2)n1CC[C@H](O)C[C@H](O)CC(=O)O
Answer: d
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}