Task: Please answer the multiple choice question.
Question: Which molecule has the longest half life time in humans after IV administration?
Constraint: Even if you are uncertain, you must pick either a or b without using any other words.
Options:
a O=C1CN=C(c2ccccc2Cl)c2cc(Cl)ccc2N1
b O=C1CN=C(c2ccccc2Cl)c2cc([N+](=O)[O-])ccc2N1
Answer: a
Task: Please answer the multiple choice question.
Question: Which molecule has the longest {half_life_duration__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%half_life_duration%}
Answer: {%multiple_choice_result}
7-chloro-5-(2-chlorophenyl)-1,3-dihydro-1,4-benzodiazepin-2-one