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, d, or e without using any other words.
Options:
a. CC(C)NC[C@H](COc1ccc(CCOCC2CC2)cc1)OC(=O)C1CC1
b. COC(=O)c1ccc(O)cc1
c. CNC[C@H](O)c1ccc(O)c(O)c1
d. COCCc1ccc(OCC(O)CNC(C)C)cc1
e. COc1ccc(-c2oc3c(CC=C(C)C)c(O[C@@H]4O[C@H](CO)[C@@H](O)[C@H](O)[C@H]4O)cc(O)c3c(=O)c2O[C@H]2O[C@H](C)[C@@H](O)[C@H](O)[C@@H]2O)cc1
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}