Using CCOC(=O)C(=O)Nc1ccc(OC)c(NC(=O)C(=O)OCC)c1 to produce COc1ccc(NC(=O)C(=O)O)cc1NC(=O)C(=O)O, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.