Using CC[C@H]1CN=C(c2ccc(-c3cc(Oc4cnc(S(C)(=O)=O)cn4)cc(O[C@@H](C)COC)c3)[nH]2)O1 to produce CC[C@H]1CN=C(c2ccc(-c3cc(Oc4cnc(S(C)(=O)=O)cn4)cc(O[C@@H](C)CO)c3)[nH]2)O1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.