Using COc1ccccc1-c1cc2c3c(c1)[C@@H]1CNCC[C@@H]1N3CCO2 to produce Oc1ccccc1-c1cc2c3c(c1)[C@@H]1CNCC[C@@H]1N3CCO2, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.