Task: Please answer the multiple choice question.
Question: Which molecule has the highest Caco-2 cell permeability?
Constraint: Even if you are uncertain, you must pick either a, b, c, or d without using any additional words.
Options:
a. CC(C)CC(N)C(=O)NCC(=O)OC[C@@H]1O[C@H](n2cc(F)c(=O)[nH]c2=O)C[C@H]1O
b. C[C@H](N)Cc1ccccc1
c. CNC(=O)[C@@H](Cc1ccccc1)NC(=O)[C@H](NC(C)=O)C(C)C
d. CN(C)c1ccc(C(=O)NCCCCCNC(=O)CS)cc1
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}