ERROR opening https://cactus.nci.nih.gov/chemical/structure/InChI=1S/C6H10O3/c1-3-9-6(8)4-5(2)7/h3-4H2,1-2H3/file?format=sdf&get3d=True -- InChI=1S/C6H10O3/c1-3-9-6(8)4-5(2)7/h3-4H2,1-2H3 could not be loaded.