ERROR opening https://cactus.nci.nih.gov/chemical/structure/InChI=1S/C6H15N5/c1-2-3-4-10-6(9)11-5(7)8/h2-4H2,1H3,(H6,7,8,9,10,11)/file?format=sdf&get3d=True  -- InChI=1S/C6H15N5/c1-2-3-4-10-6(9)11-5(7)8/h2-4H2,1H3,(H6,7,8,9,10,11) could not be loaded.