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, d, or e without using any other words.
Options:
[a] CNC[C@H](O)c1ccc(O)c(O)c1
[b] Cc1cnc(NC(=O)C2=C(O)c3ccccc3S(=O)(=O)N2C)s1
[c] C[C@@H]1C[C@H]2[C@@H]3CCC4=CC(=O)C=C[C@]4(C)[C@@]3(F)[C@@H](O)C[C@]2(C)[C@@]1(O)C(=O)CO[C@H]1O[C@@H](C(=O)O)[C@H](O)[C@@H](O)[C@@H]1O
[d] O=C(NC1(C(=O)N[C@H](Cc2ccccc2)C(=O)NCCCC(=O)N2CCC(N3CCOCC3)CC2)CCCC1)c1cc2ccccc2s1
[e] NCCCC[C@H](N[C@@H](CCc1ccccc1)C(=O)O)C(=O)N1CCC[C@H]1C(=O)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}