Task: Please answer the multiple choice question.
Question: Which molecule has the highest Caco-2 permeability?
Constraint: Even if you are uncertain, you must pick either a, b, c, d, or e without using any other words.
Options:
a) CCCCC/C=C\C/C=C\CCCCCCCC(=O)OCC/C=C/c1ccc(OC)c(OC)c1
b) CNC(=O)[C@@H](Cc1ccccc1)NC(=O)[C@@H](CC(C)C)NC(C)=O
c) COc1ccc2cc(C(C)C(=O)[O-])ccc2c1.[Na+]
d) C=C(c1ccccc1)C1OCC(NC(=O)Cc2ccccc2)CO1
e) CC[C@H](C)[C@H](N)C(=O)O[C@@H]1C[C@@H](n2cc(F)c(=O)[nH]c2=O)O[C@H]1CO
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}