Using CCOC(=O)C1CCC(=O)CC1, CC(C)(C)OC(=O)NN to produce CCOC(=O)[C@H]1CC[C@H](NNC(=O)OC(C)(C)C)CC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.