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) CCOC(=O)c1c(Cl)cccc1-c1cnc([C@@H](C)NC(=O)C2(NC(=O)C(F)(F)F)CC2)c(F)c1
b) CC[C@]1(O)C[C@@H]2CN(CCc3c([nH]c4ccccc34)[C@@](C(=O)OC)(c3cc4c(cc3OC)N(C)[C@H]3[C@@](O)(C(=O)OC)[C@H](OC(C)=O)[C@]5(CC)C=CCN6CC[C@]43[C@@H]65)C2)C1
c) Cn1cnc(S(=O)(=O)N(CCN(Cc2cncn2C)c2ccc(C#N)cc2)CC2CCCCC2)c1
d) CCCCCCC(N)C(=O)N[C@@H](Cc1c(C)cc(O)cc1C)C(=O)N1CCC[C@@H]1C(=O)N[C@@H](Cc1c[nH]c2ccccc12)C(=O)N[C@@H](Cc1ccccc1)C(N)=O
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}
ethyl 2-chloro-6-[5-fluoro-6-[(1R)-1-[[1-[(2,2,2-trifluoroacetyl)amino]cyclopropanecarbonyl]amino]ethyl]pyridin-3-yl]benzoate