ERROR opening https://cactus.nci.nih.gov/chemical/structure/InChI=1S/2AsH3O4.3Pb/c2*2-1(3,4)5;;;/h2*(H3,2,3,4,5);;;/q;;3* 2/p-6/file?format=sdf&get3d=True -- InChI=1S/2AsH3O4.3Pb/c2*2-1(3,4)5;;;/h2*(H3,2,3,4,5);;;/q;;3* 2/p-6 could not be loaded.