InChI=1S/C21H30O5/c22-16(11-10-15-6-2-1-3-7-15)12-13-18-17(19(23)14-20(18)24)8-4-5-9-21(25)26/h1-7,16-20,22-24H,8-14H2,(H,25,26)/b5-4-/t16-,17+,18+,19-,20+/m0/s1