Problem statement: Answer the multiple-choice question.
Question: Which compound exhibits a 2.595\% human ether-à-go-go related gene (hERG) inhibition at 1uM?
Constraint: You must select none, one or more options from a or b without using any additional words.
Options:
a CCOc1ccc(NC(=O)C(C)SC(N)=O)cc1
b CCOc1ccc(-c2c[n+](=O)c3c(n2[O-])CCCC3)c(OCC)c1
Answer: b. CCOc1ccc(-c2c[n+](=O)c3c(n2[O-])CCCC3)c(OCC)c1
{#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#}
3-(2,4-diethoxyphenyl)-4-oxido-5,6,7,8-tetrahydroquinoxalin-1-ium 1-oxide