Task: Answer the MCQ question.
Query: Which drug exhibits a 6.250\% 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] O=C(CSCc1ccccc1Cl)Nc1c[nH]c(=O)[nH]c1=O
[b] CCOC(=O)c1sc2c(c1C)C(c1cccs1)C1=C(CCCC1=O)N2
Answer: b. CCOC(=O)c1sc2c(c1C)C(c1cccs1)C1=C(CCCC1=O)N2
{#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)c1sc2c(c1C)C(c1cccs1)C1=C(CCCC1=O)N2
CCOC(=O)c1sc2c(c1C)C(c1cccs1)C1=C(CCCC1=O)N2
ethyl 3-methyl-5-oxo-4-thiophen-2-yl-6,7,8,9-tetrahydro-4H-thieno[2,3-b]quinoline-2-carboxylate