ERROR opening https://cactus.nci.nih.gov/chemical/structure/InChI=1/C2H4O2S/c3-2(4)1-5/h5H,1H2,(H,3,4)/file?format=sdf&get3d=True  -- InChI=1/C2H4O2S/c3-2(4)1-5/h5H,1H2,(H,3,4) could not be loaded.