Task: Answer the multiple choice question.
Query: Which compound has a 1.921\% hERG inhibition at a concentration of 1uM?
Constraint: You must select none, one or more options from a or b without using any additional words.
Options:
a) Cn1c(NCc2ccc(Cl)cc2)nc2ccccc21
b) CCCCOc1ccc(C(O)C(CN2CCOCC2)c2ccccc2)cc1.Cl
Answer: a. Cn1c(NCc2ccc(Cl)cc2)nc2ccccc21
{#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(NCc2ccc(Cl)cc2)nc2ccccc21
Cn1c(NCc2ccc(Cl)cc2)nc2ccccc21
N-[(4-chlorophenyl)methyl]-1-methylbenzimidazol-2-amine