Task: Answer the multiple-choice question.
Query: Which drug exhibits a 1.998\% hERG inhibition at 1uM?
Constraint: You must select none, one or more options from a or b without using any other words.
Options:
a. Nn1c(SCC(=O)Nc2ccc(S(=O)(=O)N3CCCC3)cc2)nnc1C(F)(F)F
b. Cc1cc(NC(=O)CN2CCN(Cc3ccccc3)CC2)nc2c1c(=O)oc1ccccc12
Answer: b. Cc1cc(NC(=O)CN2CCN(Cc3ccccc3)CC2)nc2c1c(=O)oc1ccccc12
{#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#}
2-(4-benzylpiperazin-1-yl)-N-(4-methyl-5-oxochromeno[4,3-b]pyridin-2-yl)acetamide