ERROR opening https://cactus.nci.nih.gov/chemical/structure/InChI=1S/C26H22O2/c1-3-11-21(12-4-1)23-15-7-9-17-25(23)27-19-20-28-26-18-10-8-16-24(26)22-13-5-2-6-14-22/h1-18H,19-20H2/file?format=sdf&get3d=True  -- InChI=1S/C26H22O2/c1-3-11-21(12-4-1)23-15-7-9-17-25(23)27-19-20-28-26-18-10-8-16-24(26)22-13-5-2-6-14-22/h1-18H,19-20H2 could not be loaded.