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 uncertain, you must pick either a, b, c, d, or e without using any additional words.
Options:
a: Nc1nc(=O)c2c([nH]1)NCC(CNc1ccc(C(=O)N[C@@H](CCC(=O)O)C(=O)O)cc1)N2C=O
b: C=C[C@H]1CN2CC[C@H]1C[C@H]2[C@H](O)c1ccnc2ccc(OC)cc12
c: S=P(N1CC1)(N1CC1)N1CC1
d: CC(C)(C)[C@]1(O)CC2OC(=O)CC23C(=O)OC2OC(=O)[C@H](O)C231
e: CN(CC(N)=O)C(=O)N(CCCl)N=O
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}
(2S)-2-[[4-[(2-azanyl-5-methanoyl-4-oxidanylidene-1,6,7,8-tetrahydropteridin-6-yl)methylamino]phenyl]carbonylamino]pentanedioicacid