Using COc1ccccc1C(O)COc1ccc(CC2SC(=O)NC2=O)cc1 to produce COc1ccccc1C(=O)COc1ccc(CC2SC(=O)NC2=O)cc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.