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 additional words.
Options:
a. Cc1[nH]c(=O)c(C#N)cc1-c1ccncc1
b. Cc1cnc(NCCCN(C)C)c2c1[nH]c1ccc3cc(O)ccc3c12
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}
16-[3-(dimethylamino)propylamino]-13-methyl-11,15-diazatetracyclo[8.7.0.02,7.012,17]heptadeca-1(10),2(7),3,5,8,12(17),13,15-octaen-5-ol