Task: Answer the multiple choice question.
Question: Which drug exhibits a 3.317\% 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. CC(=Nc1ccccc1)C1=C(O)CSC1=O
b. COc1ccc(OC)c(NC(=O)COC(=O)c2c3c(nc4ccccc24)CCCC3)c1
Answer: a. CC(=Nc1ccccc1)C1=C(O)CSC1=O
{#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#}
CC(=Nc1ccccc1)C1=C(O)CSC1=O
CC(=Nc1ccccc1)C1=C(O)CSC1=O
3-hydroxy-4-(C-methyl-N-phenylcarbonimidoyl)-2H-thiophen-5-one