InChI=1S/C21H32O3/c1-3-20(23)24-19-9-8-18-17-6-4-13-12-14(22)5-7-15(13)16(17)10-11-21(18,19)2/h13,15-19H,3-12H2,1-2H3/t13-,15?,16?,17?,18?,19+,21+/m0/s1