Task: Answer the multiple choice question.
Query: Which compound exhibits a -2.177\% human ether-à-go-go related gene (hERG) inhibition at 1uM?
Constraint: You must select none, one or more options from a or b without using any additional words.
Options:
a. Brc1ccccc1Cn1c(-c2cncs2)nc2ccccc21
b. Cc1ccc(C2NC(c3ccc(C)cc3)C([N+](=O)[O-])C(C)(C)C2[N+](=O)[O-])cc1
Answer: a. Brc1ccccc1Cn1c(-c2cncs2)nc2ccccc21
{#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#}
Brc1ccccc1Cn1c(-c2cncs2)nc2ccccc21
Brc1ccccc1Cn1c(-c2cncs2)nc2ccccc21
5-[1-[(2-bromophenyl)methyl]benzimidazol-2-yl]-1,3-thiazole