ERROR opening https://cactus.nci.nih.gov/chemical/structure/InChI=1S/ClHO4.H2O/c2-1(3,4)5;/h(H,2,3,4,5);1H2/file?format=sdf&get3d=True  -- InChI=1S/ClHO4.H2O/c2-1(3,4)5;/h(H,2,3,4,5);1H2 could not be loaded.