Using C[C@H](c1ccccc1)N1C[C@H](CC2(NC(=O)OC(C)(C)C)CCC2)CC1=O to produce CC(C)(C)OC(=O)NC1(C[C@H]2CCNC2)CCC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.