Problem statement: Answer the multiple-choice question.
Query: Which compound has a 8.606\% hERG inhibition at a concentration of 1uM?
Constraint: You must select none, one or more options from a or b without using any additional words.
Options:
[a] O=c1cc2oc3cc(O)c(O)cc3c(-c3ccccc3[N+](=O)[O-])c-2cc1O
[b] CCCC(=O)N(c1ccc2oc(C)c(C(C)=O)c2c1)S(=O)(=O)c1ccc(C)c([N+](=O)[O-])c1
Answer: a. O=c1cc2oc3cc(O)c(O)cc3c(-c3ccccc3[N+](=O)[O-])c-2cc1O
{#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=c1cc2oc3cc(O)c(O)cc3c(-c3ccccc3[N+](=O)[O-])c-2cc1O
O=c1cc2oc3cc(O)c(O)cc3c(-c3ccccc3[N+](=O)[O-])c-2cc1O
2,6,7-trihydroxy-9-(2-nitrophenyl)xanthen-3-one