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 uncertain, you must pick either a or b without using any other words.
Options:
a. C=C(CC)C(=O)c1ccc(OCC(=O)O)c(Cl)c1Cl
b. COc1cc(CC(=O)NCC(=O)N(CCC(=O)O)Cc2ccc(CO)c(CO)c2)ccc1NC(=O)Nc1ccccc1C
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}