Problem statement: Answer the multiple choice question.
Question: Which compound has a 11.963\% hERG inhibition at a concentration of 1uM?
Constraint: You must select none, one or more options from a or b without using any other words.
Options:
a. O=C(O)c1cc2ncc(-c3[nH]ncc3[N+](=O)[O-])cn2n1
b. O=C(C1CCC(CNS(=O)(=O)c2cccc3nsnc23)CC1)N1CCN(c2ccccn2)CC1
Answer: a. O=C(O)c1cc2ncc(-c3[nH]ncc3[N+](=O)[O-])cn2n1
{#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(O)c1cc2ncc(-c3[nH]ncc3[N+](=O)[O-])cn2n1
O=C(O)c1cc2ncc(-c3[nH]ncc3[N+](=O)[O-])cn2n1
6-(4-nitro-1H-pyrazol-5-yl)pyrazolo[1,5-a]pyrimidine-2-carboxylic acid