Using [N-]=[N+]=Nc1ccccc1, COC(=O)CC(=O)COCc1ccccc1 to produce O=C(O)c1nnn(-c2ccccc2)c1COCc1ccccc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.