Using CC(=O)OC(C)=O, CC(C)CN(C(=O)c1cnc(C(C)(C)C)nc1NCc1ccco1)[C@H]1C[C@@H](N)CN(C(=O)OC(C)(C)C)C1 to produce CC(=O)N[C@@H]1C[C@H](N(CC(C)C)C(=O)c2cnc(C(C)(C)C)nc2NCc2ccco2)CN(C(=O)OC(C)(C)C)C1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.