Task: Answer the multiple-choice question.
Query: Which drug exhibits a 0.662\% hERG inhibition at a concentration of 1uM?
Constraint: You must select none, one or more options from a, b, c, or d without using any additional words.
Options:
a Cc1cccc(NC(=O)c2ccccc2NC(=O)C2CCCCC2)c1C
b CCOC(=O)CCc1c(C)c(C#N)c2[nH]c3ccccc3n2c1=O
c CCOc1nc(NCCO)nc(NCCC2=CCCCC2)n1
d CC(=O)Nc1ccc(S(=O)(=O)N[C@@H](C)C(=O)Nc2ccc(N3CCOCC3)cc2)cc1
Answer: b. CCOC(=O)CCc1c(C)c(C#N)c2[nH]c3ccccc3n2c1=O
{#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#}
CCOC(=O)CCc1c(C)c(C#N)c2[nH]c3ccccc3n2c1=O
CCOC(=O)CCc1c(C)c(C#N)c2[nH]c3ccccc3n2c1=O
ethyl 3-(4-cyano-3-methyl-1-oxo-5H-pyrido[1,2-a]benzimidazol-2-yl)propanoate