Problem statement: Answer the multiple-choice question.
Question: Which compound has a 7.121\% 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 additional words.
Options:
[a] CN(C)CC(C)(C)CNS(=O)(=O)c1ccc(Cl)cc1.Cl
[b] O=C(CN1CCOCC1)Nc1ccc(Br)cn1
[c] Cc1cc(Br)ccc1NC(=S)NCCc1ccccc1
[d] CN1CC2([N+](=O)[O-])CC=C(Oc3ccccc3)C([N+](=O)[O-])(C1)C2
Answer: b. O=C(CN1CCOCC1)Nc1ccc(Br)cn1
{#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(CN1CCOCC1)Nc1ccc(Br)cn1
O=C(CN1CCOCC1)Nc1ccc(Br)cn1
N-(5-bromopyridin-2-yl)-2-morpholin-4-ylacetamide