Task: Answer the multiple choice question.
Query: Which drug exhibits a 18.962\% hERG inhibition at 1uM?
Constraint: You must select none, one or more options from a, b, c, or d without using any additional words.
Options:
a: CCOc1ccc(/C(O)=C2/C(=O)C(=O)N(CCOCCO)C2c2ccc(F)cc2)cc1
b: CCC(=O)NCCCCNC(=O)CC
c: COc1ccc(-c2cc3c(=O)n(CC(=O)NCc4ccc(Cl)cc4)ncn3n2)cc1
d: COC(=O)c1cc(NC(=O)Cn2c(=O)oc3ccccc32)cc(C(=O)OC)c1
Answer: b. CCC(=O)NCCCCNC(=O)CC
{#Task|Problem statement!}: Answer the {#multiple choice|multiple-choice|MCQ!} question.
{#Question|Query!}: Which {#compound|drug!} {#has|exhibits!} a {herg_central_at_1uM#}{herg_central_at_1uM__units} {herg_central_at_1uM__names__noun}?
Constraint: You must select none, one or more options from {%multiple_choice_enum%2-5%aA1} without using any {#other|additional!} words.
Options:
{SMILES%herg_central_at_1uM%}
Answer: {%multiple_choice_result}. {SMILES#}
CCC(=O)NCCCCNC(=O)CC
CCC(=O)NCCCCNC(=O)CC
N-[4-(propanoylamino)butyl]propanamide