ERROR opening https://cactus.nci.nih.gov/chemical/structure/InChI=1S/C10H8N4O4/c11-5-1-3(7(15)13-9(5)17)4-2-6(12)10(18)14-8(4)16/h1-2H,11-12H2,(H,13,15,17)(H,14,16,18)/b4-3 /file?format=sdf&get3d=True  -- InChI=1S/C10H8N4O4/c11-5-1-3(7(15)13-9(5)17)4-2-6(12)10(18)14-8(4)16/h1-2H,11-12H2,(H,13,15,17)(H,14,16,18)/b4-3  could not be loaded.