Task: Answer the MCQ question.
Query: Which drug has a 8.658\% hERG inhibition at a concentration of 1uM?
Constraint: You must select none, one or more options from a, b, c, d, or e without using any additional words.
Options:
(a) O=C1C=C(c2ccc(Br)c3ccccc23)C[C@@H](c2ccc3c(c2)OCO3)C1
(b) Cc1cccc(NC(=O)/C(C#N)=C/c2cccc([N+](=O)[O-])c2)n1
(c) CCCCn1c(N)c(Sc2ccc(C)cc2)c(=O)[nH]c1=O
(d) [O-][n+]1ccc(C2CC2)cc1
(e) O=C(O)C1CCN(S(=O)(=O)/C=C/c2ccccc2)CC1
Answer: d. [O-][n+]1ccc(C2CC2)cc1
{#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-][n+]1ccc(C2CC2)cc1
[O-][n+]1ccc(C2CC2)cc1
4-cyclopropyl-1-oxidopyridin-1-ium