Using COCOc1cc(COCc2ccccc2)c(C(=O)Nc2ccccc2)c(OCOC)c1 to produce O=C(Nc1ccccc1)c1c(O)cc(O)cc1COCc1ccccc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.