Task: Please answer the multiple choice question.
Question: Which molecule has the highest Caco-2 cell effective permeability?
Constraint: Even if you are not sure, you must pick either a, b, c, or d without using any other words.
Options:
a) COc1ccc2cc(C(C)C(=O)[O-])ccc2c1.[Na+]
b) CC1NC(=O)C(CC(=O)O)NC(=O)CNC(=O)CNC(=O)C(C)NC(=O)C(Cc2c[nH]c3ccccc23)NC1=O
c) O=C(O)C(O)Cc1ccc(O)c(O)c1
d) CC(=O)N[C@H](C)C(=O)NCCc1ccccc1
Answer: b
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}