ERROR opening https://cactus.nci.nih.gov/chemical/structure/InChI=1S/C3H7NO2S/c4-2(1-7)3(5)6/h2,7H,1,4H2,(H,5,6)/p 1/file?format=sdf&get3d=True  -- InChI=1S/C3H7NO2S/c4-2(1-7)3(5)6/h2,7H,1,4H2,(H,5,6)/p 1 could not be loaded.