Using O=C1NC(=O)[C@@H](c2cc3c4c(ccn4CCC3)c2)[C@H]1c1c[nH]c2ccccc12 to produce O=C1NC(=O)[C@@H](c2c[nH]c3ccccc23)[C@@H]1c1cc2c3c(ccn3CCC2)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.