ERROR opening https://cactus.nci.nih.gov/chemical/structure/InChI=1S/C8H8/c1-2-8-6-4-3-5-7-8/h2-7H,1H2/file?format=sdf&get3d=True  -- InChI=1S/C8H8/c1-2-8-6-4-3-5-7-8/h2-7H,1H2 could not be loaded.