ERROR opening https://cactus.nci.nih.gov/chemical/structure/InChI=1S/C13H20N2O4S/c1-13(2,3)19-12(18)15-7-9(16)6-10(15)11(17)14-4-5-20-8-14/h10H,4-8H2,1-3H3/t10-/m0/s1/file?format=sdf&get3d=True  -- InChI=1S/C13H20N2O4S/c1-13(2,3)19-12(18)15-7-9(16)6-10(15)11(17)14-4-5-20-8-14/h10H,4-8H2,1-3H3/t10-/m0/s1 could not be loaded.