ERROR opening https://cactus.nci.nih.gov/chemical/structure/InChI=1S/3C3H6O3.Fe/c3*1-2(4)3(5)6;/h3*2,4H,1H3,(H,5,6);/q;;;+3/p-3/file?format=sdf&get3d=True -- InChI=1S/3C3H6O3.Fe/c3*1-2(4)3(5)6;/h3*2,4H,1H3,(H,5,6);/q;;;+3/p-3 could not be loaded.