Task: Answer the multiple choice question.
Question: Which compound exhibits a 13.368\% human ether-à-go-go related gene (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] COc1ccc(C2CC(=O)C(C=NCCO)=C(O)C2)cc1OC
[b] CCN1CCN(c2ccc(NC(=O)c3ccc4c(c3)[nH]c(=O)n4Cc3ccc(OC)cc3)cc2)CC1
Answer: a. COc1ccc(C2CC(=O)C(C=NCCO)=C(O)C2)cc1OC
{#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#}
COc1ccc(C2CC(=O)C(C=NCCO)=C(O)C2)cc1OC
COc1ccc(C2CC(=O)C(C=NCCO)=C(O)C2)cc1OC
5-(3,4-dimethoxyphenyl)-3-hydroxy-2-(2-hydroxyethyliminomethyl)cyclohex-2-en-1-one