Task: Answer the MCQ question.
Question: Which drug has a 18.694% 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] COC(=O)C(O)(c1ccc(NC(=O)Oc2ccccc2)cc1)C(F)(F)F
[b] O=c1c2cc(Br)ccc2nc(-c2cccc(Cl)c2)n1O
Answer: b. O=c1c2cc(Br)ccc2nc(-c2cccc(Cl)c2)n1O
{#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=c1c2cc(Br)ccc2nc(-c2cccc(Cl)c2)n1O
O=c1c2cc(Br)ccc2nc(-c2cccc(Cl)c2)n1O
6-bromo-2-(3-chlorophenyl)-3-hydroxyquinazolin-4-one