Task: Please answer the multiple choice question.
Question: Which molecule has the highest Caco-2 cell effective permeability?
Constraint: Even if you are uncertain, you must pick either a, b, c, or d without using any additional words.
Options:
a) CCCCCCCC/C=C\CCCCCCCC(=O)OCC/C=C/c1ccc(OC)c(OC)c1
b) 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
c) CNC(=O)[C@@H](Cc1ccccc1)NC(=O)[C@@H](CC(C)C)NC(C)=O
d) COC(=O)c1cc(O)c(O)c(O)c1
Answer: c
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}