Problem statement: Answer the multiple-choice question.
Query: Which drug has a 1.426\% human ether-à-go-go related gene (hERG) inhibition at 1uM?
Constraint: You must select none, one or more options from a, b, or c without using any additional words.
Options:
[a] CN1Cc2c(N3CCOCC3)nc3sc(C(=O)c4ccccc4)c(N)c3c2CC1(C)C
[b] CCc1c(C)c(C#N)c2nc3ccccc3n2c1NCCN(C)C
[c] CCOC(=O)c1c(-c2ccccc2)nc2ccccn12
Answer: b. CCc1c(C)c(C#N)c2nc3ccccc3n2c1NCCN(C)C
{#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)c2nc3ccccc3n2c1NCCN(C)C
CCc1c(C)c(C#N)c2nc3ccccc3n2c1NCCN(C)C
1-[2-(dimethylamino)ethylamino]-2-ethyl-3-methylpyrido[1,2-a]benzimidazole-4-carbonitrile