Task: Answer the multiple choice question.
Query: Which compound has a -21.561\% 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.) CCCCCCn1c(SCCOC)nc2c1c(=O)[nH]c(=O)n2C
b.) Cc1ccc(C)n1-c1ccc(C(=O)O)cc1
Answer: a. CCCCCCn1c(SCCOC)nc2c1c(=O)[nH]c(=O)n2C
{#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#}
CCCCCCn1c(SCCOC)nc2c1c(=O)[nH]c(=O)n2C
CCCCCCn1c(SCCOC)nc2c1c(=O)[nH]c(=O)n2C
7-hexyl-8-(2-methoxyethylsulfanyl)-3-methylpurine-2,6-dione