ERROR opening https://cactus.nci.nih.gov/chemical/structure/InChI=1S/2H3O4P.3Pb/c2*1-5(2,3)4;;;/h2*(H3,1,2,3,4);;;/q;;3* 2/p-6/file?format=sdf&get3d=True -- InChI=1S/2H3O4P.3Pb/c2*1-5(2,3)4;;;/h2*(H3,1,2,3,4);;;/q;;3* 2/p-6 could not be loaded.