InChI=1S/C20H32O7/c1-2-3-6-9-14(25-24)12-13-16-15(19-18(23)20(16)27-26-19)10-7-4-5-8-11-17(21)22/h4,7,12-16,18-20,23-24H,2-3,5-6,8-11H2,1H3,(H,21,22)/b7-4-,13-12+/t14-,15+,16+,18?,19+,20-/m0/s1