ERROR opening https://cactus.nci.nih.gov/chemical/structure/InChI=1S/C3H7N3O3/c4-1(2(7)8)6-3(5)9/h1H,4H2,(H,7,8)(H3,5,6,9)/t1-/m0/s1/file?format=sdf&get3d=True  -- InChI=1S/C3H7N3O3/c4-1(2(7)8)6-3(5)9/h1H,4H2,(H,7,8)(H3,5,6,9)/t1-/m0/s1 could not be loaded.