ERROR opening https://cactus.nci.nih.gov/chemical/structure/InChI=1S/C7H7.Na/c1-7-5-3-2-4-6-7;/h2-6H,1H2;/q-1;+1/file?format=sdf&get3d=True -- InChI=1S/C7H7.Na/c1-7-5-3-2-4-6-7;/h2-6H,1H2;/q-1;+1 could not be loaded.