Using CC(C1OCC(C)(C)CO1)[C@H]1CC[C@H]2C3=CC=C4C[C@@H](OC(=O)Nc5ccccc5)C[C@H](OC(=O)N(C)C)[C@]4(C)[C@H]3CC[C@]12C to produce CC(C=O)[C@H]1CC[C@H]2C3=CC=C4C[C@@H](OC(=O)Nc5ccccc5)C[C@H](OC(=O)N(C)C)[C@]4(C)[C@H]3CC[C@]12C, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.