Task: Answer the MCQ question.
Query: Which compound exhibits a -1.935\% 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: Cc1ccc(-c2nnn(CC(=O)N(c3ccc(F)cc3)C(C(=O)NC3CCCC3)c3ccco3)n2)o1
b: CCOC(=O)c1c(-c2ccsc2)csc1N
Answer: b. CCOC(=O)c1c(-c2ccsc2)csc1N
{#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)c1c(-c2ccsc2)csc1N
CCOC(=O)c1c(-c2ccsc2)csc1N
ethyl 2-amino-4-thiophen-3-ylthiophene-3-carboxylate