Using O=C(CCl)OC(=O)CCl, CC(C)(C)OC(=O)NCc1ccc(-c2nc3ccnc(NN)c3cc2-c2ccccc2)cc1 to produce CC(C)(C)OC(=O)NCc1ccc(-c2nc3ccn4c(CCl)nnc4c3cc2-c2ccccc2)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.