Using CC(C)CNC(=O)NCC(=O)N1CCC2(CCCN(C(=O)OC(C)(C)C)C2)CC1 to produce CC(C)CNC(=O)NCC(=O)N1CCC2(CCCNC2)CC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.