Problem statement: Answer the multiple-choice question.
Question: Which drug exhibits a 5.149\% 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) O=C1c2ccccc2C(=O)N1CC1=CCS(=O)(=O)C1
(b) CC(=O)Oc1ccc(C(=O)Nc2cccc3c2CCCC3)cc1
Answer: a. O=C1c2ccccc2C(=O)N1CC1=CCS(=O)(=O)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#}
O=C1c2ccccc2C(=O)N1CC1=CCS(=O)(=O)C1
O=C1c2ccccc2C(=O)N1CC1=CCS(=O)(=O)C1
2-[(1,1-dioxo-2,5-dihydrothiophen-3-yl)methyl]isoindole-1,3-dione