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, b, c, or d without using any additional words.
Options:
a O=C(O)CCNC(=O)c1ccccc1
b N[C@@H](Cc1ccc(O)c(O)c1)C(=O)O
c N=C(N)NC(=O)Cc1c(Cl)cccc1Cl
d CC(=O)Nc1ccc(O)cc1
Answer: b
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}