ERROR opening https://cactus.nci.nih.gov/chemical/structure/Oc1cccc%28C%28%3DO%29N%5BC%40H%5D2COC%28%3DO%29%5BC%40H%5D%28COC%28%3DO%29%5BC%40H%5D%28COC2%3DO%29NC%28%3DO%29c2cccc%28O%29c2O%29NC%28%3DO%29c2cccc%28O%29c2O%29c1O/file?format=sdf&get3d=True  -- Oc1cccc%28C%28%3DO%29N%5BC%40H%5D2COC%28%3DO%29%5BC%40H%5D%28COC%28%3DO%29%5BC%40H%5D%28COC2%3DO%29NC%28%3DO%29c2cccc%28O%29c2O%29NC%28%3DO%29c2cccc%28O%29c2O%29c1O could not be loaded.