ERROR opening https://cactus.nci.nih.gov/chemical/structure/InChI=1S/ClH.Hg.H2N/h1H;;1H2/q;+2;-1/p-1/file?format=sdf&get3d=True -- InChI=1S/ClH.Hg.H2N/h1H;;1H2/q;+2;-1/p-1 could not be loaded.