Using CC1(C)NCC(=O)N1CC(N)=O, O=C(O)CN1CC(O)CC1=O to produce CC1(C)N(CC(N)=O)C(=O)CN1C(=O)CN1CC(O)CC1=O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.