Task: Please answer the multiple choice question.
Question: Which molecule has the highest Caco-2 permeability?
Constraint: Even if you are not sure, you must pick either a, b, c, or d without using any additional words.
Options:
a COc1ccc(-c2cc(=O)c3c(O)cc(O[C@@H]4O[C@H](CO)[C@@H](O)[C@H](O)[C@H]4O)cc3o2)cc1O
b O=C(CO)N1CCN(c2ccc(N3C[C@H](CNC(=S)C4CC4)OC3=O)cc2F)CC1
c N=C(N)c1cccc(-n2nc(C(F)(F)F)cc2C(=O)Nc2ncc(-c3ccccc3S(N)(=O)=O)cn2)c1
d COc1cc(N)c(Cl)cc1C(=O)NC1CCN(CCCOc2ccc(F)cc2)CC1OC
Answer: b
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}