ERROR opening https://cactus.nci.nih.gov/chemical/structure/InChI=1S/C8H12O2/c1-2-6-7(10-6)3-5(1)8-4-9-8/h5-8H,1-4H2/file?format=sdf&get3d=True -- InChI=1S/C8H12O2/c1-2-6-7(10-6)3-5(1)8-4-9-8/h5-8H,1-4H2 could not be loaded.