Task: Answer the multiple choice question.
Question: Which compound has a 21.583\% 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(CSc1ccccn1)N/N=C/c1cc([N+](=O)[O-])ccc1O
[b] COc1cc(OC)cc(C(=O)NNC(=O)Cc2ccc(OC)c(S(=O)(=O)N3CCOCC3)c2)c1
[c] COCCOC(=O)C1=C(C)NC(=O)NC1C1CC=CCC1
Answer: a. O=C(CSc1ccccn1)N/N=C/c1cc([N+](=O)[O-])ccc1O
{#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(CSc1ccccn1)N/N=C/c1cc([N+](=O)[O-])ccc1O
O=C(CSc1ccccn1)N/N=C/c1cc([N+](=O)[O-])ccc1O
N-[(E)-(2-hydroxy-5-nitrophenyl)methylideneamino]-2-pyridin-2-ylsulfanylacetamide