InChI=1S/C21H30O3/c1-13-15-6-7-17-19(3)9-5-10-20(4,24-14(2)22)16(19)8-11-21(17,12-15)18(13)23/h15-17H,1,5-12H2,2-4H3/t15-,16+,17+,19-,20+,21-/m1/s1