Using CCN1CCN(c2nc(-c3cnc(C4OCCCO4)s3)cc3ccccc23)CC1 to produce CCN1CCN(c2nc(-c3cnc(C=O)s3)cc3ccccc23)CC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.