InChI=1S/C21H30O3/c1-13(23)17-5-6-18-16-4-3-14-11-15(24)7-10-21(14,12-22)19(16)8-9-20(17,18)2/h3,16-19,22H,4-12H2,1-2H3/t16?,17?,18?,19?,20-,21-/m1/s1