Task: Answer the multiple choice question.
Question: Which drug has a 2.154\% hERG inhibition at a concentration of 1uM?
Constraint: You must select none, one or more options from a, b, or c without using any additional words.
Options:
a CCC(C)Sc1nc2c(c(=O)[nH]c(=O)n2C)n1Cc1ccc(Cl)cc1
b CCOC(=O)c1ccc(COC(=O)c2cc(=O)[nH]c3ccccc23)o1
c CC(=O)NC(CCS(C)(=O)=O)C(=O)Nc1ccc(Oc2ccccc2)cc1
Answer: a. CCC(C)Sc1nc2c(c(=O)[nH]c(=O)n2C)n1Cc1ccc(Cl)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#}
7-[(4-chlorophenyl)methyl]-8-butan-2-ylsulfanyl-3-methylpurine-2,6-dione