ERROR opening https://cactus.nci.nih.gov/chemical/structure/InChI=1S/C20H24N2O2.C4H6O6/c1-3-13-12-22-9-7-14(13)10-19(22)20(23)16-6-8-21-18-5-4-15(24-2)11-17(16)18;5-1(3(7)8)2(6)4(9)10/h3-6,8,11,13-14,19-20,23H,1,7,9-10,12H2,2H3;1-2,5-6H,(H,7,8)(H,9,10)/t13?,14?,19?,20-;1-,2-/m01/s1/file?format=sdf&get3d=True  -- InChI=1S/C20H24N2O2.C4H6O6/c1-3-13-12-22-9-7-14(13)10-19(22)20(23)16-6-8-21-18-5-4-15(24-2)11-17(16)18;5-1(3(7)8)2(6)4(9)10/h3-6,8,11,13-14,19-20,23H,1,7,9-10,12H2,2H3;1-2,5-6H,(H,7,8)(H,9,10)/t13?,14?,19?,20-;1-,2-/m01/s1 could not be loaded.