Using COc1ccc(C(=O)C(=O)c2ccc(OC)cc2)cc1, NNC(N)=O to produce COc1ccc(-c2nnc(O)nc2-c2ccc(OC)cc2)cc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.