Using CC(C)(C)OC(=O)NCC1CCNCC1, COC(=O)N1CCC(C=O)CC1 to produce COC(=O)N1CCC(CN2CCC(CNC(=O)OC(C)(C)C)CC2)CC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.