Task: Please answer the multiple choice question.
Question: Which molecule has the highest Caco-2 cell permeability?
Constraint: Even if you are not sure, you must pick either a or b without using any other words.
Options:
a: Cn1c(N2CCN(CCCCN3c4ccccc4Sc4ccc(C(=O)O)cc43)CC2)cc(=O)n(C)c1=O
b: COc1cnn(C)c(=O)c1-c1ccc(C[C@@H](CO)NC(=O)c2c(Cl)cccc2Cl)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}