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 additional words.
Options:
a.) Nc1nc(O)c2ncn(COC(CO)CO)c2n1
b.) CC(C)(C)[C@]1(O)CC2OC(=O)CC23C(=O)OC2OC(=O)[C@H](O)C231
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-azanyl-6-oxidanyl-purin-9-yl)methoxy]propane-1,3-diol