ERROR opening https://cactus.nci.nih.gov/chemical/structure/C%26%2361%3BC.O.Cl%26%2391%3BPt-%26%2393%3B%28Cl%29Cl.%26%2391%3BK%2B%26%2393%3B/file?format=sdf&get3d=True -- C%26%2361%3BC.O.Cl%26%2391%3BPt-%26%2393%3B%28Cl%29Cl.%26%2391%3BK%2B%26%2393%3B could not be loaded.