Task: Answer the MCQ question.
Question: Which drug exhibits a -2.426\% 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] O=c1[nH]c(CN2CCCC2)nc2sc3c(c12)CCC3
[b] CC1CCCCN1CCCNC(=O)C1CCCN(c2ncnc3c2nc2n3CCCCC2)C1
[c] CCOC(=O)C1=C(C)OC(N)=C(C#N)C1c1ccc(OC)c(C)c1OC
Answer: c. CCOC(=O)C1=C(C)OC(N)=C(C#N)C1c1ccc(OC)c(C)c1OC
{#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)C1=C(C)OC(N)=C(C#N)C1c1ccc(OC)c(C)c1OC
CCOC(=O)C1=C(C)OC(N)=C(C#N)C1c1ccc(OC)c(C)c1OC
ethyl 6-amino-5-cyano-4-(2,4-dimethoxy-3-methylphenyl)-2-methyl-4H-pyran-3-carboxylate