Using CC(=O)OCc1c(Cn2cnc3c(Cl)nc(N)nc32)cnc(C)c1OC(C)=O to produce Cc1ncc(Cn2cnc3c(Cl)nc(N)nc32)c(CO)c1O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.