ERROR opening https://cactus.nci.nih.gov/chemical/structure/NCCc1cc%28OC%29c%28cc1OC%29SC%28C%29%28C%29C/file?format=sdf&get3d=True  -- NCCc1cc%28OC%29c%28cc1OC%29SC%28C%29%28C%29C could not be loaded.