ERROR opening https://cactus.nci.nih.gov/chemical/structure/n4cncn4CC1%28c%28cc3%29ccc3F%29OC1c2ccccc2Cl/file?format=sdf&get3d=True  -- n4cncn4CC1%28c%28cc3%29ccc3F%29OC1c2ccccc2Cl could not be loaded.