Task: Answer the multiple-choice question.
Query: Which compound has a 0.509\% hERG inhibition at a concentration of 1uM?
Constraint: You must select none, one or more options from a or b without using any additional words.
Options:
a CCC(=O)c1ccccc1OCCSc1nc(C)cc(=O)[nH]1
b CN(C)S(=O)(=O)N1CCN(CC(=O)Nc2ccc(Br)cc2)CC1
Answer: a. CCC(=O)c1ccccc1OCCSc1nc(C)cc(=O)[nH]1
{#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#}
CCC(=O)c1ccccc1OCCSc1nc(C)cc(=O)[nH]1
CCC(=O)c1ccccc1OCCSc1nc(C)cc(=O)[nH]1
4-methyl-2-[2-(2-propanoylphenoxy)ethylsulfanyl]-1H-pyrimidin-6-one