Using COCCBr, COC(=O)c1cc(-c2ccc(OC)cc2)nc(-c2ccc(O)cc2)c1N=[N+]=[N-] to produce COCCOc1ccc(-c2nc(-c3ccc(OC)cc3)cc(C(=O)OC)c2N=[N+]=[N-])cc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.