ERROR opening https://cactus.nci.nih.gov/chemical/structure/InChI=1S/3NO3.Sm/c3*2-1(3)4;/q3*-1;+3/file?format=sdf&get3d=True -- InChI=1S/3NO3.Sm/c3*2-1(3)4;/q3*-1;+3 could not be loaded.