Using COC(=O)c1ccccc1NC(=O)CNC(=O)OCc1ccccc1 to produce O=C(CNC(=O)OCc1ccccc1)Nc1ccccc1C(=O)O, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.