ERROR opening https://cactus.nci.nih.gov/chemical/structure/InChI=1S/C6H6N4S/c1-11-6-4-2-9-10-5(4)7-3-8-6/h2-3H,1H3,(H,7,8,9,10)/file?format=sdf&get3d=True  -- InChI=1S/C6H6N4S/c1-11-6-4-2-9-10-5(4)7-3-8-6/h2-3H,1H3,(H,7,8,9,10) could not be loaded.