Using CCn1ncc2c(NC3CCOCC3)c(C3=NOC4(C3)CC(OCc3ccccc3)C4)cnc21 to produce CCn1ncc2c(NC3CCOCC3)c(C3=NOC4(C3)CC(O)C4)cnc21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.