ERROR opening https://cactus.nci.nih.gov/chemical/structure/InChI=1S/C6H10O4.2K/c7-5(8)3-1-2-4-6(9)10/file?format=sdf&get3d=True  -- InChI=1S/C6H10O4.2K/c7-5(8)3-1-2-4-6(9)10 could not be loaded.