ERROR opening https://cactus.nci.nih.gov/chemical/structure/InChI=1S/C6H14N2O4/c7-1-2-4(9)5(10)3(8)6(11)12-2/h2-6,9-11H,1,7-8H2/t2-,3-,4-,5-,6?/m1/s1/file?format=sdf&get3d=True  -- InChI=1S/C6H14N2O4/c7-1-2-4(9)5(10)3(8)6(11)12-2/h2-6,9-11H,1,7-8H2/t2-,3-,4-,5-,6?/m1/s1 could not be loaded.