Using CCOC(=O)C(=O)Nc1cc(NC(=O)C(=O)OCC)cc(C(=O)O)c1 to produce O=C(O)C(=O)Nc1cc(NC(=O)C(=O)O)cc(C(=O)O)c1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.