Using [N-]=[N+]=NCc1ccccc1, CCOC(=O)C(CCC(=O)OC)C(=O)OCC to produce O=C(O)CCc1nnn(Cc2ccccc2)c1O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.