Problem statement: Answer the multiple-choice question.
Question: Which compound exhibits a 20.448\% 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 other words.
Options:
a.) CC(=O)N1c2ccc(S(=O)(=O)N3CCC(C(=O)Nc4cccc(C)c4)CC3)cc2CC1C
b.) O=C(Nc1c[nH]c(=O)[nH]c1=O)c1cc([N+](=O)[O-])cc([N+](=O)[O-])c1
c.) COc1ccc(NC(=O)CSCC(=O)N(C)Cc2ccc3c(c2)OCCO3)cc1
d.) O=C(NCC1CC1)c1onc(CSc2ccc(F)cc2)c1C(=O)NCC1CC1
Answer: b. O=C(Nc1c[nH]c(=O)[nH]c1=O)c1cc([N+](=O)[O-])cc([N+](=O)[O-])c1
{#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=C(Nc1c[nH]c(=O)[nH]c1=O)c1cc([N+](=O)[O-])cc([N+](=O)[O-])c1
O=C(Nc1c[nH]c(=O)[nH]c1=O)c1cc([N+](=O)[O-])cc([N+](=O)[O-])c1
N-(2,4-dioxo-1H-pyrimidin-5-yl)-3,5-dinitrobenzamide