Using COc1nc(C)c(Nc2nc(Cl)cn(C[C@@H](OC)C3CC3)c2=O)cc1C to produce COc1nc(C)c(Nc2nc(Cl)cn(C[C@@H](O)C3CC3)c2=O)cc1C, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.