Task: Answer the MCQ question.
Query: Which drug exhibits a -2.812\% 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: Cn1c(NCCN2CCOCC2)nc2c1c(=O)n(Cc1cccc(Cl)c1)c(=O)n2C
b: CC[N+](C)(CC)CCCOC(=O)C(O)(c1ccccc1)C1CCCCC1.[I-]
Answer: a. Cn1c(NCCN2CCOCC2)nc2c1c(=O)n(Cc1cccc(Cl)c1)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(NCCN2CCOCC2)nc2c1c(=O)n(Cc1cccc(Cl)c1)c(=O)n2C
Cn1c(NCCN2CCOCC2)nc2c1c(=O)n(Cc1cccc(Cl)c1)c(=O)n2C
1-[(3-chlorophenyl)methyl]-3,7-dimethyl-8-(2-morpholin-4-ylethylamino)purine-2,6-dione