Task: Answer the MCQ question.
Question: Which drug exhibits a -3.886\% hERG inhibition at a concentration of 1uM?
Constraint: You must select none, one or more options from a, b, c, or d without using any other words.
Options:
a: COc1ccc(NC(=O)CN(C)C(=O)c2cn(-c3ccccc3)nc2-c2ccc(OC)cc2)cc1
b: Cn1c(NCCCN2CCOCC2)nc2c1c(=O)n(Cc1ccc(Cl)cc1Cl)c(=O)n2C
c: Cc1ccc(C2C(C(=O)c3ccco3)=C(O)C(=O)N2c2ncccn2)cc1
d: CC1=C(C(=O)Nc2ccccc2)C(c2ccncc2)C(C#N)=C(SCC(=O)Nc2ccccc2)N1
Answer: b. Cn1c(NCCCN2CCOCC2)nc2c1c(=O)n(Cc1ccc(Cl)cc1Cl)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#}
Cn1c(NCCCN2CCOCC2)nc2c1c(=O)n(Cc1ccc(Cl)cc1Cl)c(=O)n2C
Cn1c(NCCCN2CCOCC2)nc2c1c(=O)n(Cc1ccc(Cl)cc1Cl)c(=O)n2C
1-[(2,4-dichlorophenyl)methyl]-3,7-dimethyl-8-(3-morpholin-4-ylpropylamino)purine-2,6-dione