Problem statement: Answer the MCQ question.
Question: Which compound exhibits a 18.551\% 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 other words.
Options:
a.) COc1cc(C(C)=O)ccc1Oc1cnccn1
b.) CNC(=O)c1[nH]cnc1C(=O)Nc1cccc(C)c1
c.) O=C(c1cc([N+](=O)[O-])ccc1Cl)N1c2ccccc2Sc2ccccc21
d.) C#CCOc1ccc2c(c1)c(C(C)=O)c(C)n2Cc1ccccc1
Answer: a. COc1cc(C(C)=O)ccc1Oc1cnccn1
{#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#}
COc1cc(C(C)=O)ccc1Oc1cnccn1
COc1cc(C(C)=O)ccc1Oc1cnccn1
1-(3-methoxy-4-pyrazin-2-yloxyphenyl)ethanone