Using CCOC(=O)NNc1ccc(CN2OCC(C)(C)C2=O)c(Cl)c1 to produce CCOC(=O)N=Nc1ccc(CN2OCC(C)(C)C2=O)c(Cl)c1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.