Problem statement: Answer the MCQ question.
Query: Which drug exhibits a 20.831\% 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] CC1CCCCC1NC(=O)CSc1nnc(CNC(=O)c2ccccc2)n1C
[b] Clc1ccccc1CN1CCN(c2ccccc2)CC1
[c] CCCC(=O)Nc1ccc2c(c1)nc(CN1CCN(C(C)=O)CC1)n2C
Answer: b. Clc1ccccc1CN1CCN(c2ccccc2)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#}
Clc1ccccc1CN1CCN(c2ccccc2)CC1
Clc1ccccc1CN1CCN(c2ccccc2)CC1
1-[(2-chlorophenyl)methyl]-4-phenylpiperazine