InChI=1S/C21H30O5/c1-11(22)21(26)9-6-13-12-4-5-14-18(25)15(23)7-8-19(14,2)17(12)16(24)10-20(13,21)3/h12-13,16-17,24-26H,4-10H2,1-3H3/t12?,13?,16?,17?,19-,20-,21-/m0/s1