Task: Answer the MCQ question.
Question: Which drug exhibits a 2.512\% human ether-à-go-go related gene (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.) COc1ccc(N2CCCn3c2nc2c3c(=O)n(CCN3CCOCC3)c(=O)n2C)cc1
b.) O=C(NC(C(=O)c1ccccc1)N1CCOCC1)c1ccccc1
Answer: a. COc1ccc(N2CCCn3c2nc2c3c(=O)n(CCN3CCOCC3)c(=O)n2C)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#}
9-(4-methoxyphenyl)-1-methyl-3-(2-morpholin-4-ylethyl)-7,8-dihydro-6H-purino[7,8-a]pyrimidine-2,4-dione