ERROR opening https://cactus.nci.nih.gov/chemical/structure/c45cc3cc2cc1ccc%3Cbr%3Ecc1cc2cc3cc4cccc5/file?format=sdf&get3d=True -- c45cc3cc2cc1ccc%3Cbr%3Ecc1cc2cc3cc4cccc5 could not be loaded.