ERROR opening https://cactus.nci.nih.gov/chemical/structure/InChI=1S/C3H3NO2S/c5-2-1-7-3(6)4-2/h1H2,(H,4,5,6)/file?format=sdf&get3d=True  -- InChI=1S/C3H3NO2S/c5-2-1-7-3(6)4-2/h1H2,(H,4,5,6) could not be loaded.