Task: Please answer the multiple choice question.
Question: Which molecule has the longest half life in humans after IV administration?
Constraint: Even if you are not sure, you must pick either a or b without using any other words.
Options:
[a] O=C(O)c1cc(-c2ccc(F)cc2F)ccc1O
[b] c1ccc(C2(c3ccccc3)CC2C2=NCCN2)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}
5-(2,4-difluorophenyl)-2-hydroxybenzoic acid