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