Problem statement: Answer the MCQ question.
Question: Which drug exhibits a 4.022% hERG inhibition at 10uM?
Constraint: You must select none, one or more options from a, b, or c without using any additional words.
Options:
(a) Cc1sc2nc3ccc(NCc4ccco4)nn3c(=O)c2c1C
(b) [O-][n+]1c2ccccc2cc2ccccc21
(c) Cc1ccccc1CC(=O)Nc1ccc2c(C)cc(=O)oc2c1
Answer: b. [O-][n+]1c2ccccc2cc2ccccc21
{#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-][n+]1c2ccccc2cc2ccccc21
[O-][n+]1c2ccccc2cc2ccccc21
10-oxidoacridin-10-ium