ERROR opening https://cactus.nci.nih.gov/chemical/structure/InChI=1/C4H8S/c1-3-4-5-2/h3H,1,4H2,2H3/file?format=sdf&get3d=True  -- InChI=1/C4H8S/c1-3-4-5-2/h3H,1,4H2,2H3 could not be loaded.