InChI=1S/C21H30O3/c1-12(22)19-18(24)11-17-15-5-4-13-10-14(23)6-8-20(13,2)16(15)7-9-21(17,19)3/h4,15-19,24H,5-11H2,1-3H3/t15?,16?,17?,18?,19?,20-,21-/m0/s1