Using [N-]=[N+]=NCCCCBr, CCOC(=O)C(NC(C)=O)C(=O)OCC to produce CCOC(=O)C(CCCCN=[N+]=[N-])(NC(C)=O)C(=O)OCC, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.