Using CCOC(=O)N1CCc2c(c3cccc4c3n2CC(=O)N4)C1, CN(C)C=O to produce CCOC(=O)N1CCc2c(c3cccc4c3n2C(C)C(=O)N4C)C1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.