ERROR opening https://cactus.nci.nih.gov/chemical/structure/InChI=1S/C11H12N2O6/c1-3-7(2)19-11(14)8-4-9(12(15)16)6-10(5-8)13(17)18/h4-7H,3H2,1-2H3/file?format=sdf&get3d=True  -- InChI=1S/C11H12N2O6/c1-3-7(2)19-11(14)8-4-9(12(15)16)6-10(5-8)13(17)18/h4-7H,3H2,1-2H3 could not be loaded.