Using [N-]=[N+]=[N-], O=C(O)c1cc(N=Nc2ccc(OCCCCCCCCBr)cc2)ccc1O to produce [N-]=[N+]=NCCCCCCCCOc1ccc(N=Nc2ccc(O)c(C(=O)O)c2)cc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.