ERROR opening https://cactus.nci.nih.gov/chemical/structure/InChI=1S/C5H8O4.C2H6N2.Pt/c1-2-3(4(6)7)5(8)9;3-1-2-4;/h3H,2H2,1H3,(H,6,7)(H,8,9);3-4H,1-2H2;/q;-2;+2/file?format=sdf&get3d=True  -- InChI=1S/C5H8O4.C2H6N2.Pt/c1-2-3(4(6)7)5(8)9;3-1-2-4;/h3H,2H2,1H3,(H,6,7)(H,8,9);3-4H,1-2H2;/q;-2;+2 could not be loaded.