Using COc1c(C(C)Nc2ncnc3c2ncn3C2CCCCO2)cc(Cl)c(C)c1C1CCN(C(=O)OC(C)(C)C)CC1, ClCCl to produce COc1c(C(C)Nc2ncnc3[nH]cnc23)cc(Cl)c(C)c1C1CCNCC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.