Using OC(c1nc2c(N3CCOCC3)nc(Cl)nc2n1C1CCCCO1)C(F)(F)F to produce OC(c1nc2c(N3CCOCC3)nc(Cl)nc2[nH]1)C(F)(F)F, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.