ERROR opening https://cactus.nci.nih.gov/chemical/structure/InChI=O=C1c3c(O/C(=C1/OC)c2ccc(OC)cc2)cc(O)cc3O/file?format=sdf&get3d=True  -- InChI=O=C1c3c(O/C(=C1/OC)c2ccc(OC)cc2)cc(O)cc3O could not be loaded.