002570: InChI=1.12Beta/C19H20O7/c20-15(11-25-18(23)13-7-3-1-4-8-13)17(22)16(21)12-26-19(24)14-9-5-2-6-10-14/h1-10H,11-12H2,15-17H,20-22H/t15-,16+,17-