ERROR opening https://cactus.nci.nih.gov/chemical/structure/InChI=1S/C6H6N4O2S2/c7-6(13)9-8-3-4-1-2-5(14-4)10(11)12/h1-3H,(H3,7,9,13)/b8-3+/file?format=sdf&get3d=True -- InChI=1S/C6H6N4O2S2/c7-6(13)9-8-3-4-1-2-5(14-4)10(11)12/h1-3H,(H3,7,9,13)/b8-3+ could not be loaded.