ERROR opening https://cactus.nci.nih.gov/chemical/structure/InChI=1S/C8H8O4/c1-4(9)3-6-7(10)5(2)8(11)12-6/h3,10H,1-2H3/b6-3 /file?format=sdf&get3d=True  -- InChI=1S/C8H8O4/c1-4(9)3-6-7(10)5(2)8(11)12-6/h3,10H,1-2H3/b6-3  could not be loaded.