Task: Answer the multiple choice question.
Question: Which drug exhibits a -9.622% hERG inhibition at a concentration of 10uM?
Constraint: You must select none, one or more options from a, b, c, or d without using any additional words.
Options:
(a) O=C(Oc1ccc([N+](=O)[O-])cc1)c1cncc(Br)c1
(b) COc1cc(NC(=S)Nc2ccc(S(=O)(=O)N3CCOCC3)cc2)cc(OC)c1OC
(c) CCn1c(SCC(=O)c2ccc(Cl)cc2)nnc1-c1ccoc1C
(d) O=C1NC(=O)/C(=C/c2cccc3ccccc23)S1
Answer: a. O=C(Oc1ccc([N+](=O)[O-])cc1)c1cncc(Br)c1
{#Task|Problem statement!}: Answer the {#multiple choice|multiple-choice|MCQ!} question.
{#Question|Query!}: Which {#compound|drug!} {#has|exhibits!} a {herg_central_at_10uM#}{herg_central_at_10uM__units} {herg_central_at_10uM__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_10uM%}
Answer: {%multiple_choice_result}. {SMILES#}
O=C(Oc1ccc([N+](=O)[O-])cc1)c1cncc(Br)c1
O=C(Oc1ccc([N+](=O)[O-])cc1)c1cncc(Br)c1
(4-nitrophenyl) 5-bromopyridine-3-carboxylate