Using CCOC(=O)c1cc(Br)cc(C(=O)OCC)n1, [N-]=[N+]=NCCCO to produce CCOC(=O)c1cc(OCCCN=[N+]=[N-])cc(C(=O)OCC)n1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.