perfluorobutanoic acid molecule, structural chemical formula, ball-and-stick model, image perfluoroalkyl carboxylic acid

perfluorobutanoic acid pfba perfluoroalkyl carboxylic molecule molecular structure chemical formula isolated model c4hf7o2 atom chemistry composition compound heptafluorobutyric hfba organofluorine perfluorinated pfas science scientific atomic drawing skeletal icon line flat organic carbon oxygen hydrogen abstract fluorine structural ball- -stick image ball- -stick acid