ERROR opening https://cactus.nci.nih.gov/chemical/structure/InChI=1S/C4H4N6S/c5-4-6-2-1(3(11)7-4)8-10-9-2/h(H4,5,6,7,8,9,10,11)/file?format=sdf&get3d=True  -- InChI=1S/C4H4N6S/c5-4-6-2-1(3(11)7-4)8-10-9-2/h(H4,5,6,7,8,9,10,11) could not be loaded.