Task: Answer the multiple choice question.
Question: Which compound exhibits a 3.633\% human ether-à-go-go related gene (hERG) inhibition at 1uM?
Constraint: You must select none, one or more options from a, b, c, or d without using any other words.
Options:
[a] C/[N+]([O-])=C\C1C(=O)CCCC1=O
[b] Cn1c(=O)c(-[n+]2ccccc2)c([O-])c2ccccc21
[c] COc1cc(/C=N/NC(=O)C2CCN(CC(O)COCc3ccccc3)CC2)cc(OC)c1OC
[d] COc1ccc2c(c1)[n+](=O)c(C(C)=O)c(C)n2[O-]
Answer: b. Cn1c(=O)c(-[n+]2ccccc2)c([O-])c2ccccc21
{#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(=O)c(-[n+]2ccccc2)c([O-])c2ccccc21
Cn1c(=O)c(-[n+]2ccccc2)c([O-])c2ccccc21
1-methyl-2-oxo-3-pyridin-1-ium-1-ylquinolin-4-olate