Aug. 27, 2020  56  US 2020/0272048 Al  0  O+-cNH,  j  O+-cNH,  Y-CN+H2  0  0  Y-CN+H2  Br  o+-cNH,  0  Y-CN+H2  -continued  o+-cNH,  o+-cNH,  o+-cNH,  O+-cNH,  Y-CWH2  \_  j  $^{0 }$\  O  Y-CWH 2  \_  j  \_  j 