ERROR opening https://cactus.nci.nih.gov/chemical/structure/COC1%3DCC%3DC2%5BC%40H%5D3Cc4ccc%28O%29c5O%5BC%40%40H%5D1%5BC%40%40%5D2%28CCN3C%29c45/file?format=sdf&get3d=True  -- COC1%3DCC%3DC2%5BC%40H%5D3Cc4ccc%28O%29c5O%5BC%40%40H%5D1%5BC%40%40%5D2%28CCN3C%29c45 could not be loaded.