ERROR opening https://cactus.nci.nih.gov/chemical/structure/InChI=1S/Mg.H3N.H3O4P.6H2O/c;;1-5(2,3)4;;;;;;/h;1H3;(H3,1,2,3,4);6*1H2/q 2;;;;;;;;/p-2/file?format=sdf&get3d=True  -- InChI=1S/Mg.H3N.H3O4P.6H2O/c;;1-5(2,3)4;;;;;;/h;1H3;(H3,1,2,3,4);6*1H2/q 2;;;;;;;;/p-2 could not be loaded.