Task: Answer the MCQ question.
Query: Which drug exhibits a 6.771\% 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 other words.
Options:
a: O=c1oc2ccccc2c(Nc2ccc(F)cc2)c1[N+](=O)[O-]
b: CCCOC(=O)NC1CCS(=O)(=O)C1
c: c1ccc2c(c1)SCc1nnc(-c3ccncc3)n1-2
d: O=C(OCC(=O)N1CCN(C(=O)c2ccco2)CC1)c1cc(-c2ccc(Cl)c(Cl)c2Cl)nc2ccccc12
e: CC1CC(C)CN(S(=O)(=O)c2ccc3c(c2)CC(C)N3C(=O)C2CCC2)C1
Answer: a. O=c1oc2ccccc2c(Nc2ccc(F)cc2)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#}
O=c1oc2ccccc2c(Nc2ccc(F)cc2)c1[N+](=O)[O-]
O=c1oc2ccccc2c(Nc2ccc(F)cc2)c1[N+](=O)[O-]
4-(4-fluoroanilino)-3-nitrochromen-2-one