perfluoroheptanesulfonic acid molecular structure 3d, flat model, perfluoroalkyl derivative, structural chemical formula view from

perfluoroheptanesulfonic acid perfluoroalkyl derivative pfhps sodium salt molecule molecular structure chemical formula 3d model c7f15so3h c7hf15o3s atom chemistry science medicine biochemistry biology shape protein organic oxygen sphere hydrogen built material poisonous laboratory research mineral nitrogen carbon connection education gas microbiology atomic flammable plastic supplement chain