ERROR opening https://cactus.nci.nih.gov/chemical/structure/InChI=1S/3CH2O2.Fe/c3*2-1-3;/h3*1H,(H,2,3);/q;;;+3/p-3/file?format=sdf&get3d=True -- InChI=1S/3CH2O2.Fe/c3*2-1-3;/h3*1H,(H,2,3);/q;;;+3/p-3 could not be loaded.