ERROR opening https://cactus.nci.nih.gov/chemical/structure/s3ccnc3-c2sc%28SCCO%29c1c2CC%28C%29%28C%29CC1%3DO/file?format=sdf&get3d=True  -- s3ccnc3-c2sc%28SCCO%29c1c2CC%28C%29%28C%29CC1%3DO could not be loaded.