Problem statement: Answer the MCQ question.
Question: Which compound exhibits a -8.032\% human ether-à-go-go related gene (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 CCc1c(C)c(C#N)c2nc3ccccc3n2c1NCc1ccccn1
b CSc1ccccc1-c1nnc(-c2ccc(Cl)cc2)o1
Answer: a. CCc1c(C)c(C#N)c2nc3ccccc3n2c1NCc1ccccn1
{#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#}
CCc1c(C)c(C#N)c2nc3ccccc3n2c1NCc1ccccn1
CCc1c(C)c(C#N)c2nc3ccccc3n2c1NCc1ccccn1
2-ethyl-3-methyl-1-(pyridin-2-ylmethylamino)pyrido[1,2-a]benzimidazole-4-carbonitrile