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, b, c, or d without using any other words.
Options:
(a) CCOC(=O)[C@@H]1C2CCC(C[C@@H]1OC(=O)c1ccccc1)N2C
(b) N[C@@H](C(=O)N[C@@H]1C(=O)N2C(C(=O)O)=C(CSc3c[nH]nn3)CS[C@H]12)c1ccc(O)cc1
(c) CCCCN1CCCCC1C(=O)Nc1c(C)cccc1C
(d) CC(CCc1ccccc1)NCC(O)c1ccc(O)c(C(N)=O)c1
Answer: c
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}
1-butyl-N-(2,6-dimethylphenyl)piperidine-2-carboxamide