0 B16R2.218421 Cn1c(nc2c1c(=O)n(c(=O)n2C)C)Cl CSC000018940 [0,2,0,0,0,0|1,0,1]=4 1 B16R2.218421 Cn1c(nc2c1n(c(=O)n(c2=O)C)C)Br CSC009814494 [0,2,0,0,0,0|1,0,1]=4