Aug. 27, 2020  18  US  2020/0272048  Al  -continued  R,~--o-<+o  H,  0  O+oH,  Br  -continued  OH  HO-Q-<+cNH,  OH  ~:+oH,  OH  d=<:+oH,  H~Q-<+cNH,  NH2  Br  fu-Q-<+cNH,  Br  Cl  c,-Q-<+cNH,  Cl  Br  B,-Q-<+cNH,  HO  Br  c,~+cNH,  Cl  Cl 