Problem statement: Answer the multiple-choice question.
Query: Which drug exhibits a -18.982\% human ether-à-go-go related gene (hERG) inhibition at 1uM?
Constraint: You must select none, one or more options from a, b, or c without using any additional words.
Options:
a COc1ccc(CN(Cc2cccn2C)S(=O)(=O)c2ccccc2)cc1
b NC(=O)N1OCC2COc3ccc4ccccc4c3C21
c CCOC(=O)/C=C/C(=O)Nc1cccc([N+](=O)[O-])c1
Answer: b. NC(=O)N1OCC2COc3ccc4ccccc4c3C21
{#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#}
NC(=O)N1OCC2COc3ccc4ccccc4c3C21
NC(=O)N1OCC2COc3ccc4ccccc4c3C21
11,15-dioxa-16-azatetracyclo[8.7.0.02,7.013,17]heptadeca-1(10),2,4,6,8-pentaene-16-carboxamide