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, or d without using any additional words.
Options:
a. Cn1cnc(S(=O)(=O)N(CCN(Cc2cncn2C)c2ccc(C#N)cc2)Cc2ccccc2)c1
b. CC(=O)N[C@@H](C(=O)NCCc1ccccc1)C(C)C
c. CC(C)NC[C@H](COc1ccc(CCOCC2CC2)cc1)OC(=O)C1CC1
d. NC(N)=N/N=C/c1c(Cl)cccc1Cl
Answer: d
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}