Task: Answer the MCQ question.
Question: Which compound exhibits a 9.991\% 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) CN1CCN(c2nc(-c3ccc(Br)cc3)nnc2-c2ccccc2)CC1
(b) CC(C)CNS(=O)(=O)c1ccc(CCC(=O)N2CCN(Cc3ccc4c(c3)OCO4)CC2)cc1
(c) CCCCc1ccc(-c2ccc(Br)cc2)nc1
(d) O=C(CCCN1C(=O)/C(=C\c2cccs2)SC1=S)Nc1ccc(C(=O)O)cc1
Answer: c. CCCCc1ccc(-c2ccc(Br)cc2)nc1
{#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#}
CCCCc1ccc(-c2ccc(Br)cc2)nc1
CCCCc1ccc(-c2ccc(Br)cc2)nc1
2-(4-bromophenyl)-5-butylpyridine