Task: Answer the multiple choice question.
Question: Which drug has a 0.006\% 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) CCOCCOc1nc2c(c(=O)n(C)c(=O)n2C)n1Cc1ccc(C)cc1
(b) Cc1ncc(CO)c(/C=N/NC(=S)Nc2ccc(F)cc2)c1O
Answer: a. CCOCCOc1nc2c(c(=O)n(C)c(=O)n2C)n1Cc1ccc(C)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#}
8-(2-ethoxyethoxy)-1,3-dimethyl-7-[(4-methylphenyl)methyl]purine-2,6-dione