Task: Answer the multiple choice question.
Query: Which compound exhibits a -0.015\% 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, b, or c without using any additional words.
Options:
[a] CCOC(=O)C(CC)Sc1ncnc2nc[nH]c12
[b] Cc1c(NC(=O)C(C)OC(=O)c2cc(-c3cccc4ccccc34)nc3ccccc23)c(=O)n(-c2ccccc2)n1C
[c] COc1ccc(NC(=O)C2CCN(S(=O)(=O)c3cccc4cccnc34)CC2)cc1
Answer: a. CCOC(=O)C(CC)Sc1ncnc2nc[nH]c12
{#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)C(CC)Sc1ncnc2nc[nH]c12
CCOC(=O)C(CC)Sc1ncnc2nc[nH]c12
ethyl2-(7H-purin-6-ylsulfanyl)butanoate