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.) Nc1nc(O)c2ncn(CCC(CO)CO)c2n1
b.) O=C(O)c1cc(/N=N/c2ccc(O)c(C(=O)O)c2)ccc1O
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}
2-[2-(2-azanyl-6-oxidanyl-purin-9-yl)ethyl]propane-1,3-diol