Task: Answer the multiple choice question.
Question: Which compound exhibits a -20.280\% human ether-à-go-go related gene (hERG) inhibition at 1uM?
Constraint: You must select none, one or more options from a, b, or c without using any additional words.
Options:
(a) O=C(Nc1nccs1)c1ccccc1Br
(b) Cc1cc(C(=O)N2CCN(c3ccc(F)cc3)CC2)on1
(c) O=C(CSc1nnc(-c2cccs2)n1Cc1ccco1)Nc1ccc2c(c1)OCO2
Answer: a. O=C(Nc1nccs1)c1ccccc1Br
{#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(Nc1nccs1)c1ccccc1Br
O=C(Nc1nccs1)c1ccccc1Br
2-bromo-N-(1,3-thiazol-2-yl)benzamide