ERROR opening https://cactus.nci.nih.gov/chemical/structure/C1C%28O1%29COC2%3DCC%28%3DCC%3DC2%29OCC3CO3/file?format=sdf&get3d=True  -- C1C%28O1%29COC2%3DCC%28%3DCC%3DC2%29OCC3CO3 could not be loaded.