Problem statement: Answer the multiple-choice question.
Query: Which compound exhibits a -42.133\% hERG inhibition at a concentration of 1uM?
Constraint: You must select none, one or more options from a or b without using any additional words.
Options:
[a] O=C(COc1ccc(Br)cc1)N1CCN(C2CCCC2)CC1
[b] Cc1ccccc1NC(=S)Nc1ccc2cn[nH]c2c1
Answer: a. O=C(COc1ccc(Br)cc1)N1CCN(C2CCCC2)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#}
O=C(COc1ccc(Br)cc1)N1CCN(C2CCCC2)CC1
O=C(COc1ccc(Br)cc1)N1CCN(C2CCCC2)CC1
2-(4-bromophenoxy)-1-(4-cyclopentylpiperazin-1-yl)ethanone