Task: Answer the multiple choice question.
Question: Which drug exhibits a 5.250\% human ether-à-go-go related gene (hERG) inhibition at 1uM?
Constraint: You must select none, one or more options from a or b without using any other words.
Options:
[a] COc1nc(N2CCOCC2)nc(C)c1[N+](=O)[O-]
[b] O=C(COc1ccc(F)cc1)Nc1nnc(C2CC2)s1
Answer: a. COc1nc(N2CCOCC2)nc(C)c1[N+](=O)[O-]
{#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#}
COc1nc(N2CCOCC2)nc(C)c1[N+](=O)[O-]
COc1nc(N2CCOCC2)nc(C)c1[N+](=O)[O-]
4-(4-methoxy-6-methyl-5-nitropyrimidin-2-yl)morpholine