Using COc1cc(Cc2cnc(NOC3CCCCO3)nc2NOC2CCCCO2)cc(OC)c1OC to produce COc1cc(Cc2cnc(NOC3CCCCO3)nc2NO)cc(OC)c1OC, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.