ERROR opening https://cactus.nci.nih.gov/chemical/structure/InChI=1S/2C4H7NO4.Mg/c2*5-2(4(8)9)1-3(6)7;/h2*2H,1,5H2,(H,6,7)(H,8,9);/q;; 2/p-2/t2*2-;/m00./s1/file?format=sdf&get3d=True  -- InChI=1S/2C4H7NO4.Mg/c2*5-2(4(8)9)1-3(6)7;/h2*2H,1,5H2,(H,6,7)(H,8,9);/q;; 2/p-2/t2*2-;/m00./s1 could not be loaded.