ERROR opening https://cactus.nci.nih.gov/chemical/structure/InChI=1S/C8H8.C4H6.C3H3N/c1-2-8-6-4-3-5-7-8/file?format=sdf&get3d=True -- InChI=1S/C8H8.C4H6.C3H3N/c1-2-8-6-4-3-5-7-8 could not be loaded.