Problem statement: Answer the multiple-choice question.
Question: Which compound exhibits a 2.150\% 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, or c without using any other words.
Options:
(a) CCN1CCN(Cc2cc(Br)cc(OC)c2O)CC1
(b) COc1cccc(OC)c1OCCOc1ccccc1OC(C)C
(c) COc1cccc(C(=O)O/N=C(\N)c2ccc(C)cc2)c1
Answer: a. CCN1CCN(Cc2cc(Br)cc(OC)c2O)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#}
CCN1CCN(Cc2cc(Br)cc(OC)c2O)CC1
CCN1CCN(Cc2cc(Br)cc(OC)c2O)CC1
4-bromo-2-[(4-ethylpiperazin-1-yl)methyl]-6-methoxyphenol