ERROR opening https://cactus.nci.nih.gov/chemical/structure/InChI=1S/C26H22N8/c1-5-13-21(14-6-1)27-31-25(32-28-22-15-7-2-8-16-22)26(33-29-23-17-9-3-10-18-23)34-30-24-19-11-4-12-20-24/h1-20,27,29H/b31-25?,32-28+,33-26?,34-30+/file?format=sdf&get3d=True  -- InChI=1S/C26H22N8/c1-5-13-21(14-6-1)27-31-25(32-28-22-15-7-2-8-16-22)26(33-29-23-17-9-3-10-18-23)34-30-24-19-11-4-12-20-24/h1-20,27,29H/b31-25?,32-28+,33-26?,34-30+ could not be loaded.