Problem statement: Answer the multiple choice question.
Query: Which drug exhibits a 1.803\% 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] OC(Cc1cccnc1)(Cc1cccnc1)c1cc2ccccc2[nH]1
[b] COC(=O)CN=Cc1c(C)[nH]n(-c2ccccc2)c1=O
Answer: b. COC(=O)CN=Cc1c(C)[nH]n(-c2ccccc2)c1=O
{#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#}
COC(=O)CN=Cc1c(C)[nH]n(-c2ccccc2)c1=O
COC(=O)CN=Cc1c(C)[nH]n(-c2ccccc2)c1=O
methyl 2-[(5-methyl-3-oxo-2-phenyl-1H-pyrazol-4-yl)methylideneamino]acetate