Problem statement: Answer the MCQ question.
Query: Which compound has a 2.756\% hERG inhibition at a concentration of 1uM?
Constraint: You must select none, one or more options from a or b without using any additional words.
Options:
a CCCCn1c(SCc2ccccn2)nc2c1c(=O)n(C)c(=O)n2C
b CCOC(=O)N1CCC(NC(=O)CS(=O)(=O)Cc2nc(-c3ccccc3C)oc2C)CC1
Answer: a. CCCCn1c(SCc2ccccn2)nc2c1c(=O)n(C)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#}
CCCCn1c(SCc2ccccn2)nc2c1c(=O)n(C)c(=O)n2C
CCCCn1c(SCc2ccccn2)nc2c1c(=O)n(C)c(=O)n2C
7-butyl-1,3-dimethyl-8-(pyridin-2-ylmethylsulfanyl)purine-2,6-dione