Task: Answer the multiple-choice question.
Question: Which compound exhibits a 2.227% 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) O=C1c2cccc(O)c2C(=O)c2c(O)cccc21
b) COC(C[C@@H](O)C[C@@H](O)[C@@H](C)OCc1ccccc1)OC
Answer: a. O=C1c2cccc(O)c2C(=O)c2c(O)cccc21
{#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=C1c2cccc(O)c2C(=O)c2c(O)cccc21
O=C1c2cccc(O)c2C(=O)c2c(O)cccc21
1,8-dihydroxyanthracene-9,10-dione