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.) O=C(NC(Cc1c[nH]c2ccccc12)C(=O)O)OCc1ccccc1
b.) COC(=O)c1c(F)cc(Cl)cc1-c1ccc([C@@H](C)NC(=O)C2(NC(=O)C(F)(F)F)CC2)c(F)c1
c.) NCCCC[C@H](N[C@@H](CCc1ccccc1)C(=O)O)C(=O)N1CCC[C@@H]1C(=O)O
d.) CNC[C@H](O)c1ccc(O)c(O)c1
Answer: a
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}