Problem statement: Answer the MCQ question.
Query: Which drug exhibits a 25.205% hERG inhibition at a concentration of 10uM?
Constraint: You must select none, one or more options from a, b, or c without using any additional words.
Options:
[a] O=c1[nH][nH]c(=O)c2cc([N+](=O)[O-])ccc12
[b] COCc1cc(=O)[nH]c(N2CCN(c3ccccc3OC)CC2)n1
[c] COc1ccccc1OCC(=O)Nc1ccc2c(c1)n(C)c(=O)n2C
Answer: a. O=c1[nH][nH]c(=O)c2cc([N+](=O)[O-])ccc12
{#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#}
O=c1[nH][nH]c(=O)c2cc([N+](=O)[O-])ccc12
O=c1[nH][nH]c(=O)c2cc([N+](=O)[O-])ccc12
6-nitro-2,3-dihydrophthalazine-1,4-dione