Task: Answer the multiple choice question.
Query: Which drug exhibits a 18.389\% 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) CC1=C([N+](=O)[O-])C(c2ccccc2)NC(=O)N1
(b) CC(C)(C)NC(=O)Cn1c(=O)c(=O)n(Cc2ccccc2)c2ccc(Cl)cc21
(c) O=C(c1ccncc1)N1CCCC(N2CCN(c3ccc(F)cc3)CC2)C1
Answer: a. CC1=C([N+](=O)[O-])C(c2ccccc2)NC(=O)N1
{#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#}
CC1=C([N+](=O)[O-])C(c2ccccc2)NC(=O)N1
CC1=C([N+](=O)[O-])C(c2ccccc2)NC(=O)N1
6-methyl-5-nitro-4-phenyl-3,4-dihydro-1H-pyrimidin-2-one