Using CCOC(=O)c1ccc(N2C[C@@H](C)N[C@@H](C)C2)cc1, COc1cc(COc2cc(N)[nH]n2)cc(OC)c1 to produce COc1cc(COc2cc(NC(=O)c3ccc(N4C[C@@H](C)N[C@@H](C)C4)cc3)[nH]n2)cc(OC)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.