ERROR opening https://cactus.nci.nih.gov/chemical/structure/InChI=1S/C6H6O3/c1-4-6(8)5(7)2-3-9-4/h2-3,8H,1H3/file?format=sdf&get3d=True  -- InChI=1S/C6H6O3/c1-4-6(8)5(7)2-3-9-4/h2-3,8H,1H3 could not be loaded.