Task: Answer the multiple-choice question.
Query: Which drug has a 4.348\% human ether-à-go-go related gene (hERG) inhibition at a concentration of 1uM?
Constraint: You must select none, one or more options from a, b, c, or d without using any additional words.
Options:
a O=C(Nc1ccccc1)c1nsnc1C(=O)Nc1ccccc1
b O=[N+]([O-])c1cccnc1Oc1ccc(F)cc1F
c CCCC(=O)c1c(NC(C)C)cc(C)oc1=O
d COc1ccc2nc(N3CCN(C(=O)c4ccc5ncsc5c4)CC3)sc2c1
Answer: b. O=[N+]([O-])c1cccnc1Oc1ccc(F)cc1F
{#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+]([O-])c1cccnc1Oc1ccc(F)cc1F
O=[N+]([O-])c1cccnc1Oc1ccc(F)cc1F
2-(2,4-difluorophenoxy)-3-nitropyridine