Using CCCN(CCC)CC(=O)O[C@H]1C[C@]2(C)C(C(C)=O)=CC[C@H]2[C@@H]2CC[C@H]3C[C@@H](O)CC[C@]3(C)[C@H]21 to produce CCCN(CCC)CC(=O)O[C@H]1C[C@]2(C)[C@@H](C(C)=O)CC[C@H]2[C@@H]2CC[C@H]3C[C@@H](O)CC[C@]3(C)[C@H]21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.