ERROR opening https://cactus.nci.nih.gov/chemical/structure/InChI=1S/Al.K.8O.3Si/q+3;+1;8*-2;3*+4/file?format=sdf&get3d=True -- InChI=1S/Al.K.8O.3Si/q+3;+1;8*-2;3*+4 could not be loaded.