ERROR opening https://cactus.nci.nih.gov/chemical/structure/InChI=1S/C16H16O7/c1-16(22)4-6-10(8(18)5-16)15(21)11-7(17)3-9(23-2)14(20)12(11)13(6)19/h3,8,18-19,21-22H,4-5H2,1-2H3/t8?,16-/m0/s1/file?format=sdf&get3d=True  -- InChI=1S/C16H16O7/c1-16(22)4-6-10(8(18)5-16)15(21)11-7(17)3-9(23-2)14(20)12(11)13(6)19/h3,8,18-19,21-22H,4-5H2,1-2H3/t8?,16-/m0/s1 could not be loaded.