ERROR opening https://cactus.nci.nih.gov/chemical/structure/CC+%28%3DO%29+CC+%28C%5C1%3DC+%28/O%29+c2ccccc2OC/1%3DO%29+c3ccccc3/file?format=sdf&get3d=True -- CC+%28%3DO%29+CC+%28C%5C1%3DC+%28/O%29+c2ccccc2OC/1%3DO%29+c3ccccc3 could not be loaded.