Problem statement: Answer the multiple choice question.
Question: Which compound exhibits a -17.677\% 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 Cc1cccc(/C=N/NC(=O)Cn2nccc2C)n1
b CCn1c(CN2CCN(C(c3ccccc3)c3ccccc3)CC2)nc2c1c(=O)n(C)c(=O)n2C
Answer: b. CCn1c(CN2CCN(C(c3ccccc3)c3ccccc3)CC2)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#}
CCn1c(CN2CCN(C(c3ccccc3)c3ccccc3)CC2)nc2c1c(=O)n(C)c(=O)n2C
CCn1c(CN2CCN(C(c3ccccc3)c3ccccc3)CC2)nc2c1c(=O)n(C)c(=O)n2C
8-[(4-benzhydrylpiperazin-1-yl)methyl]-7-ethyl-1,3-dimethylpurine-2,6-dione