ERROR opening https://cactus.nci.nih.gov/chemical/structure/InChI=1S/C20H18O8/c21-19-16-17(10-1-3-12-14(5-10)26-8-24-12)23-7-20(16,22)18(28-19)11-2-4-13-15(6-11)27-9-25-13/h1-6,16-19,21-22H,7-9H2/t16-,17 ,18 ,19 ,20 /m0/s1/file?format=sdf&get3d=True  -- InChI=1S/C20H18O8/c21-19-16-17(10-1-3-12-14(5-10)26-8-24-12)23-7-20(16,22)18(28-19)11-2-4-13-15(6-11)27-9-25-13/h1-6,16-19,21-22H,7-9H2/t16-,17 ,18 ,19 ,20 /m0/s1 could not be loaded.