Task: Answer the multiple-choice question.
Query: Which compound exhibits a 2.553\% 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=C(NCCNC(=O)c1ccc(Cl)cc1Cl)c1ccco1
(b) CCc1nc(SCC(=O)Nc2cc(C)on2)c2c(C)c(C)sc2n1
Answer: b. CCc1nc(SCC(=O)Nc2cc(C)on2)c2c(C)c(C)sc2n1
{#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#}
CCc1nc(SCC(=O)Nc2cc(C)on2)c2c(C)c(C)sc2n1
CCc1nc(SCC(=O)Nc2cc(C)on2)c2c(C)c(C)sc2n1
2-(2-ethyl-5,6-dimethylthieno[2,3-d]pyrimidin-4-yl)sulfanyl-N-(5-methyl-1,2-oxazol-3-yl)acetamide