001693: InChI=1.12Beta/C20H22O8/c21-15(11-27-19(25)13-7-3-1-4-8-13)17(23)18(24)16(22)12-28-20(26)14-9-5-2-6-10-14/h1-10H,11-12H2,15-18H,21-24H/t15-,16-,17-,18-/m0/s1