ERROR opening https://cactus.nci.nih.gov/chemical/structure/InChI=1S/C4H7NO4.2K/c5-2(4(8)9)1-3(6)7;;/h2H,1,5H2,(H,6,7)(H,8,9);;/q;2* 1/p-2/t2-;;/m0../s1/file?format=sdf&get3d=True  -- InChI=1S/C4H7NO4.2K/c5-2(4(8)9)1-3(6)7;;/h2H,1,5H2,(H,6,7)(H,8,9);;/q;2* 1/p-2/t2-;;/m0../s1 could not be loaded.