ERROR opening https://cactus.nci.nih.gov/chemical/structure/InChI=1S/C16H12O5/c1-20-15-4-2-9(6-13(15)19)14-5-3-11-12(18)7-10(17)8-16
(11)21-14/h2-8H,1H3,(H2-,17,18,19)/p+1/file?format=sdf&get3d=True  -- InChI=1S/C16H12O5/c1-20-15-4-2-9(6-13(15)19)14-5-3-11-12(18)7-10(17)8-16
(11)21-14/h2-8H,1H3,(H2-,17,18,19)/p+1 could not be loaded.