Using [N-]=[N+]=[N-], COc1ccc2c(c1OC)C(=O)O[C@@H]2[C@H]1c2c(c(Br)c3c(c2OC)OCO3)CCN1C to produce COc1ccc2c(c1OC)C(=O)O[C@@H]2[C@H]1c2c(c(N=[N+]=[N-])c3c(c2OC)OCO3)CCN1C, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.