ERROR opening https://cactus.nci.nih.gov/chemical/structure/C%5BC%40H%5D1CCCC%28%3DO%29CCCCCc2cc%28O%29cc%28O%29c2C%28%3DO%29O1/file?format=sdf&get3d=True  -- C%5BC%40H%5D1CCCC%28%3DO%29CCCCCc2cc%28O%29cc%28O%29c2C%28%3DO%29O1 could not be loaded.