InChI=1S/C21H32O3/c1-14(2)7-5-9-16-13-23-21-19-17(16)12-11-15(3)8-6-10-18(19)20(22-4)24-21/h7-8,10,16-17,19-21H,5-6,9,11-13H2,1-4H3/b15-8-,18-10+/t16?,17-,19-,20+,21+/m0/s1