Task: Answer the multiple-choice question.
Query: Which compound exhibits a 4.226\% human ether-à-go-go related gene (hERG) inhibition at 1uM?
Constraint: You must select none, one or more options from a, b, c, or d without using any additional words.
Options:
a O=c1c2ccccc2nc2n1C(CSc1ccc(F)cc1)CN2
b C=CCNC(=O)CSc1ccc(Cl)cc1
c O=C1CC(c2ccc3c(c2)OCCO3)Oc2ccc([N+](=O)[O-])cc21
d CCOc1ccc(N(CC(=O)NCC(C)C)S(C)(=O)=O)cc1
Answer: c. O=C1CC(c2ccc3c(c2)OCCO3)Oc2ccc([N+](=O)[O-])cc21
{#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#}
2-(2,3-dihydro-1,4-benzodioxin-6-yl)-6-nitro-2,3-dihydrochromen-4-one