Using NCCCCCCN, CC1(C)CC(=O)CC(C)(C)N1OC1CCCCC1 to produce CC1(C)CC(NCCCCCCNC2CC(C)(C)N(OC3CCCCC3)C(C)(C)C2)CC(C)(C)N1OC1CCCCC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.