Using OC1(c2nc3c(N4CCOCC4)nc(Cl)nc3n2C2CCCCO2)COC1 to produce OC1(c2nc3c(N4CCOCC4)nc(Cl)nc3[nH]2)COC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.