Using CCOC(=O)N1CCc2c(c3cccc4c3n2C(C)(C)C(=O)N4C)C1 to produce CCOC(=O)N1CCc2c(c3cccc4c3n2C(C)(C)CN4C)C1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.