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, b, c, or d without using any additional words.
Options:
a. COC(=O)C1=C(C)NC(C)=C(C(=O)OC(C)C)C1c1cccc2nonc12
b. CN(C)Cc1nnc2n1-c1ccc(Cl)cc1C(c1ccccc1)=NC2
c. CN1C(=O)CN=C(c2ccccc2F)c2cc([N+](=O)[O-])ccc21
d. CCCCCN(C)CCC(O)(P(=O)(O)O)P(=O)(O)O
Answer: d
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-hydroxy-3-[methyl(pentyl)amino]-1-phosphonopropyl]phosphonic acid