0  B7R0.5  CCOC(=O)C(C)=O DB05869 [1,0,0,0,0,0|2,0,1]=4
1  B6R0.4  NCCCC(=O)O DB02530 [2,0,0,0,0,0|2,0,0]=4
2  B6R0.4  O=C([O-])CCCO DB01440 [2,0,0,0,0,0|2,0,0]=4