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 other words.
Options:
a) CC(C)(C)C(=O)OCOC(=O)N1CCC(N2CCN(CC(=O)c3ccc(OCC(=O)OC4CCCCC4)cc3)C(=O)C2)CC1
b) CC1=C(C(=O)O)N2C(=O)C(NC(=O)C(N)c3ccccc3)C2SC1
c) O=c1[nH]c2cc(Cl)ccc2o1
d) CNC1(c2ccccc2Cl)CCCCC1=O
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}