Problem statement: Answer the multiple choice question.
Question: Which compound has a -15.325\% human ether-à-go-go related gene (hERG) inhibition at a concentration of 1uM?
Constraint: You must select none, one or more options from a, b, c, or d without using any additional words.
Options:
[a] O=C1c2ccccc2-c2nccnc21
[b] CC(=O)c1ccc2c(c1)OCCOCCOCCOCCOCCO2
[c] CCOc1ccc(CCNC(=O)COC(=O)c2cc(OC)cc(OC)c2)cc1OCC
[d] CC(=O)COc1ccc2c(-c3cccc([N+](=O)[O-])c3)cc(=O)oc2c1
Answer: a. O=C1c2ccccc2-c2nccnc21
{#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#}
O=C1c2ccccc2-c2nccnc21
O=C1c2ccccc2-c2nccnc21
indeno[1,2-b]pyrazin-9-one