Using CC1CCC(C(C)C)C(OC(=O)C2CC(CC3CCCCC3)CN2C(=O)OC(C)(C)C)C1 to produce O=C(O)[C@@H]1C[C@H](CC2CCCCC2)CN1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.