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 not sure, you must pick either a or b without using any additional words.
Options:
a. c1ccc(C2(c3ccccc3)CC2C2=NCCN2)cc1
b. CC1CCN(CCCC(=O)c2ccc(F)cc2)CC1
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}
2-(2,2-di(cyclohexa-2,4,6-trien-1-yl)cyclopropyl]-4,5-dihydro-1H-imidazole