Task: Answer the multiple-choice question.
Question: Which drug exhibits a -2.153\% 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] CCCCC(CC)C(=O)NCC(C)NC(=O)C(CC)CCCC
[b] Br.N=c1n(CCN2CCOCC2)c2ccccc2n1CC(=O)c1cccc([N+](=O)[O-])c1
[c] Cc1ccc(NC(=O)Nc2c(C)n(C)n(-c3ccccc3)c2=O)cc1C
[d] C=C(C)c1cccc(C(C)(C)NC(=O)NC(c2ccccc2)c2ccc(OC)cc2)c1
Answer: b. Br.N=c1n(CCN2CCOCC2)c2ccccc2n1CC(=O)c1cccc([N+](=O)[O-])c1
{#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#}
Br.N=c1n(CCN2CCOCC2)c2ccccc2n1CC(=O)c1cccc([N+](=O)[O-])c1
Br.N=c1n(CCN2CCOCC2)c2ccccc2n1CC(=O)c1cccc([N+](=O)[O-])c1
2-[2-imino-3-(2-morpholin-4-ylethyl)benzimidazol-1-yl]-1-(3-nitrophenyl)ethanone;hydrobromide