Task: Answer the MCQ question.
Query: Which compound exhibits a -6.149% hERG inhibition at a concentration of 10uM?
Constraint: You must select none, one or more options from a or b without using any other words.
Options:
a: COc1ccc(C(=O)NNC2=CC(=O)CC(C)(C)C2)cc1OC
b: COc1c(C)oc2c3c(ccc2c1=O)OC(C)C3
Answer: b. COc1c(C)oc2c3c(ccc2c1=O)OC(C)C3
{#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#}
COc1c(C)oc2c3c(ccc2c1=O)OC(C)C3
COc1c(C)oc2c3c(ccc2c1=O)OC(C)C3
3-methoxy-2,8-dimethyl-8,9-dihydrofuro[2,3-h]chromen-4-one