0  B6R0.4  NCCCC(=O)O DB02530 [2,0,0,0,0,0|1,0,0]=3
1  B6R0.4  O=C([O-])CCCO DB01440 [2,0,0,0,0,0|1,0,1]=4
2  B8R0.4  CCCCCCCCO DB12452 [1,1,0,0,0,0|1,0,1]=4
3  B10R0.116  CCCCP(=O)(O)CCCN DB05010 [0,2,0,0,0,0|2,0,0]=4