ERROR opening https://cactus.nci.nih.gov/chemical/structure/InChI=1S/C28H22Cl2O4/c29-23-14-20-18(13-27(23)33)6-3-17-10-22(28(34)24(30)11-17)21-9-15(5-8-25(21)31)1-2-16-4-7-19(20)26(32)12-16/h4-5,7-14,31-34H,1-3,6H2/file?format=sdf&get3d=True  -- InChI=1S/C28H22Cl2O4/c29-23-14-20-18(13-27(23)33)6-3-17-10-22(28(34)24(30)11-17)21-9-15(5-8-25(21)31)1-2-16-4-7-19(20)26(32)12-16/h4-5,7-14,31-34H,1-3,6H2 could not be loaded.