Task: Answer the multiple-choice question.
Query: Which drug exhibits a 19.450\% human ether-à-go-go related gene (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) COc1ccc(CCNC(=O)c2coc3ccccc3c2=O)cc1
b) CCn1ccnc1CN(C)Cc1nc(CCC(C)C)no1
c) CCCNCc1cc(OCC)c(OCC(=O)Nc2ccccc2)cc1Br
d) O=C(Nc1ccc2c(c1)OCO2)c1ccccn1
Answer: a. COc1ccc(CCNC(=O)c2coc3ccccc3c2=O)cc1
{#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#}
COc1ccc(CCNC(=O)c2coc3ccccc3c2=O)cc1
COc1ccc(CCNC(=O)c2coc3ccccc3c2=O)cc1
N-[2-(4-methoxyphenyl)ethyl]-4-oxochromene-3-carboxamide