Using COc1cccc([C@@H]2C(=O)NC(=O)[C@H]2c2cn3c4c(cccc24)CCC3)c1 to produce O=C1NC(=O)[C@@H](c2cn3c4c(cccc24)CCC3)[C@@H]1c1cccc(O)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.