Using O=C(Nc1nc2c(s1)C[C@@H](N1CCOCC1)CC2)OCc1ccccc1 to produce Nc1nc2c(s1)C[C@@H](N1CCOCC1)CC2, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.