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