0 B9R1.1 CC1=CCC(C=O)CC1 BB17-2241 [2,0,0,0,0,0|1,0,0]=3 1 B11R2.845 CC(=O)C1CC2C=CC1C2 BB54-0149 [1,0,0,1,0,0|2,0,0]=4