ERROR opening https://cactus.nci.nih.gov/chemical/structure/InChI=1S/BF4.NO2/c2-1(3,4)5;2-1-3/q-1; 1/file?format=sdf&get3d=True -- InChI=1S/BF4.NO2/c2-1(3,4)5;2-1-3/q-1; 1 could not be loaded.