ERROR opening https://cactus.nci.nih.gov/chemical/structure/InChI%3DInChI%3D1S/C20H12/c1-2-8-16-15%287-1%2917-9-3-5-13-11-12-14-6-4-10-18%2816%2920%2814%2919%2813%2917/h1-12H/file?format=sdf&get3d=True  -- InChI%3DInChI%3D1S/C20H12/c1-2-8-16-15%287-1%2917-9-3-5-13-11-12-14-6-4-10-18%2816%2920%2814%2919%2813%2917/h1-12H could not be loaded.