0 B13R2.5393 CN1C(=O)NC(=O)C2=C1NC=N2 HY-50723 [2,0,0,0,0,0|1,0,1]=4 1 B13R2.5393 CN1C(=O)NC(=O)C2=C1NC=N2 HY-50723R [2,0,0,0,0,0|1,0,1]=4