Task: Answer the multiple-choice question.
Query: Which drug exhibits a 2.076\% hERG inhibition at a concentration of 1uM?
Constraint: You must select none, one or more options from a or b without using any other words.
Options:
a. C/C(=N\NC(=O)c1ccccc1C)c1cccc([N+](=O)[O-])c1
b. COc1ccc2c(C)c(Cl)c(=O)oc2c1
Answer: b. COc1ccc2c(C)c(Cl)c(=O)oc2c1
{#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#}
COc1ccc2c(C)c(Cl)c(=O)oc2c1
COc1ccc2c(C)c(Cl)c(=O)oc2c1
3-chloro-7-methoxy-4-methylchromen-2-one