You are a chemist. Now you are given a description of a molecule. Please generate a molecule that meets the description.
system
I give you a description of a molecule, and you need to return one molecule in SMILES that meets the description. The description: The molecule is a potassium channel inhibitor and belongs to the arrhythmia treatment class of molecules.
user
CCC(NC(=O)c1cc(C(=O)N2C(COC)CCC2COC)n2c1COCC2)c1ccccc1
assistant