Using N=C(N)n1cccn1, CCOC(=O)C1(COc2ccc3c(c2)CNCC3)CCN(c2ccncn2)CC1 to produce N=C(N)N1CCc2ccc(OCC3(C(=O)O)CCN(c4ccncn4)CC3)cc2C1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.