Task: Answer the multiple choice question.
Query: Which compound exhibits a 11.612\% 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(=O)Nc1ccc(N=Cc2c(C)c(C#N)c(=O)n(CCc3ccccc3)c2O)cc1
b. COc1ccc(N2CCN(S(=O)(=O)c3cc(C)ccc3OC)CC2)cc1
Answer: b. COc1ccc(N2CCN(S(=O)(=O)c3cc(C)ccc3OC)CC2)cc1
{#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#}
1-(2-methoxy-5-methylphenyl)sulfonyl-4-(4-methoxyphenyl)piperazine