Task: Answer the MCQ question.
Question: Which drug exhibits a 6.399\% 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(CCNc2ncnc3nc[nH]c23)cc1OC
(b) CCN(CC)S(=O)(=O)c1ccc(NC(=O)C2c3ccccc3Oc3ccccc32)cc1
Answer: a. COc1ccc(CCNc2ncnc3nc[nH]c23)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(CCNc2ncnc3nc[nH]c23)cc1OC
COc1ccc(CCNc2ncnc3nc[nH]c23)cc1OC
N-[2-(3,4-dimethoxyphenyl)ethyl]-7H-purin-6-amine