Using CCCCC(C=O)CC, CCC(C)Nc1ccc(NC(C)CC)cc1 to produce CCCCC(CC)CN(c1ccc(N(CC(CC)CCCC)C(C)CC)cc1)C(C)CC, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.