Task: Answer the multiple-choice question.
Query: Which compound has a -1.388\% hERG inhibition at a concentration of 1uM?
Constraint: You must select none, one or more options from a or b without using any additional words.
Options:
a) COc1ccc(C(=O)NCc2nnc(SCC(=O)Nc3cc(OC)ccc3OC)o2)cc1
b) CCOC(=O)C1CCN(c2ncnc3nc[nH]c23)CC1
Answer: b. CCOC(=O)C1CCN(c2ncnc3nc[nH]c23)CC1
{#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#}
CCOC(=O)C1CCN(c2ncnc3nc[nH]c23)CC1
CCOC(=O)C1CCN(c2ncnc3nc[nH]c23)CC1
ethyl 1-(7H-purin-6-yl)piperidine-4-carboxylate