Task: Answer the multiple-choice question.
Question: Which compound exhibits a 16.571\% 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) Oc1ccc(Br)cc1CN1CCN(c2ccccc2)CC1
b) COC(=O)C(C(=O)Nc1cccc(Cl)c1C)C1CCCC1
c) c1ccc(C(c2ccccc2)N2CCN(c3nc4ccccc4n4cnnc34)CC2)cc1
Answer: a. Oc1ccc(Br)cc1CN1CCN(c2ccccc2)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#}
Oc1ccc(Br)cc1CN1CCN(c2ccccc2)CC1
Oc1ccc(Br)cc1CN1CCN(c2ccccc2)CC1
4-bromo-2-[(4-phenylpiperazin-1-yl)methyl]phenol