Task: Answer the MCQ question.
Question: Which drug exhibits a -20.819% hERG inhibition at a concentration of 10uM?
Constraint: You must select none, one or more options from a, b, c, or d without using any additional words.
Options:
a: CCC(C)(C)n1nnnc1C(c1cccnc1)N1CCC(Cc2ccccc2)CC1
b: COC(=O)Cn1c(=O)c2c(nc(Br)n2Cc2ccccc2Cl)n(C)c1=O
c: CC(C)NC(=O)c1cc(-c2cccs2)on1
d: Cc1cc(Br)cc(C)c1NC(=S)NC(=O)CC(C)C
Answer: b. COC(=O)Cn1c(=O)c2c(nc(Br)n2Cc2ccccc2Cl)n(C)c1=O
{#Task|Problem statement!}: Answer the {#multiple choice|multiple-choice|MCQ!} question.
{#Question|Query!}: Which {#compound|drug!} {#has|exhibits!} a {herg_central_at_10uM#}{herg_central_at_10uM__units} {herg_central_at_10uM__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_10uM%}
Answer: {%multiple_choice_result}. {SMILES#}
COC(=O)Cn1c(=O)c2c(nc(Br)n2Cc2ccccc2Cl)n(C)c1=O
COC(=O)Cn1c(=O)c2c(nc(Br)n2Cc2ccccc2Cl)n(C)c1=O
methyl 2-[8-bromo-7-[(2-chlorophenyl)methyl]-3-methyl-2,6-dioxopurin-1-yl]acetate