ERROR opening https://cactus.nci.nih.gov/chemical/structure/InChI=1S/C7H6O4/c8-4-1-2-5(7(10)11)6(9)3-4/h1-3,8-9H,(H,10,11)/file?format=sdf&get3d=True  -- InChI=1S/C7H6O4/c8-4-1-2-5(7(10)11)6(9)3-4/h1-3,8-9H,(H,10,11) could not be loaded.