0 B18R0.221 CCCCCCCC\C=C/CCCCCCCCBr BB31-6280 [0,0,0,0,0,0|1,0,0]=1 1 B19R0.36 OCCCCCCCCCCCCCCCCCCO BB31-4924 [0,1,0,0,0,0|0,0,2]=3