ERROR opening https://cactus.nci.nih.gov/chemical/structure/C1CC%28C1%29%28C%28%3DO%29O%29C%28%3DO%29O.C1CC%28C1%29%28C%28%3DO%29%5BO-%5D%29C%28%3DO%29%5BO-%5D.N.N.%5BPt%2B2%5D/file?format=sdf&get3d=True -- C1CC%28C1%29%28C%28%3DO%29O%29C%28%3DO%29O.C1CC%28C1%29%28C%28%3DO%29%5BO-%5D%29C%28%3DO%29%5BO-%5D.N.N.%5BPt%2B2%5D could not be loaded.