Task: Answer the multiple-choice question.
Query: Which compound exhibits a 13.211\% 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 CSC1=NSC2=NC(=O)/C(=C/c3coc4ccccc4c3=O)C(=N)N12
b CCOC(=O)c1sc(Nc2nc3cc4c(cc3s2)OCO4)cc1C
Answer: b. CCOC(=O)c1sc(Nc2nc3cc4c(cc3s2)OCO4)cc1C
{#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#}
ethyl 5-([1,3]dioxolo[4,5-f][1,3]benzothiazol-6-ylamino)-3-methylthiophene-2-carboxylate