35  US 9,904,167 B2  36  -continued  -continued  OH  HO  OH  CC s+X)I  0  ~  OH  ¢~  OH  CC s+X)I  0  ~  ¢~  OH  CC s+X)I  0  ~  OH  0~ /’--...../  Q  CC s+X)I  0  ~  0  OH  0~  (A19)  (A20)  (A21)  (A22)  (A23)  (A15)  (A16)  (A17)  (AlS) 