ERROR opening https://cactus.nci.nih.gov/chemical/structure/InChI=1S/C6H6O3/c7-3-5-1-2-6(4-8)9-5/h1-3,8H,4H2/file?format=sdf&get3d=True  -- InChI=1S/C6H6O3/c7-3-5-1-2-6(4-8)9-5/h1-3,8H,4H2 could not be loaded.