Task: Answer the multiple choice question.
Query: Which drug exhibits a 21.638% hERG inhibition at a concentration of 10uM?
Constraint: You must select none, one or more options from a or b without using any additional words.
Options:
a. C=Cc1c(C)c2cc3[nH]c(cc4nc(cc5nc(cc1[nH]2)C(C)=C5CCC(=O)O)C(CCC(=O)O)=C4C)c(C)c3C=C
b. C/C(=N\NC(=O)Cc1cc(=O)[nH][nH]1)c1cccc([N+](=O)[O-])c1
Answer: b. C/C(=N\NC(=O)Cc1cc(=O)[nH][nH]1)c1cccc([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_10uM#}{herg_central_at_10uM__units} {herg_central_at_10uM__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_10uM%}
Answer: {%multiple_choice_result}. {SMILES#}
C/C(=N\NC(=O)Cc1cc(=O)[nH][nH]1)c1cccc([N+](=O)[O-])c1
C/C(=N\NC(=O)Cc1cc(=O)[nH][nH]1)c1cccc([N+](=O)[O-])c1
N-[(E)-1-(3-nitrophenyl)ethylideneamino]-2-(5-oxo-1,2-dihydropyrazol-3-yl)acetamide