0  B6R0.4  NCCCC(=O)O DB02530 [1,0,0,0,0,0|3,0,0]=4
1  B6R0.4  O=C([O-])CCCO DB01440 [1,0,0,0,0,0|3,0,0]=4
2  B6R0.4  O=C([O-])CCCO DB09072 [1,0,0,0,0,0|3,0,0]=4