ERROR opening https://cactus.nci.nih.gov/chemical/structure/InChI=1S/C8H8N2O4/c1-3-6(9)5(8(13)14)4(2-10-3)7(11)12/h2H,9H2,1H3,(H,11,12)(H,13,14)/file?format=sdf&get3d=True  -- InChI=1S/C8H8N2O4/c1-3-6(9)5(8(13)14)4(2-10-3)7(11)12/h2H,9H2,1H3,(H,11,12)(H,13,14) could not be loaded.