InChI=1S/C21H30O2/c1-13(22)17-6-7-18-16-5-4-14-12-15(23)8-10-20(14,2)19(16)9-11-21(17,18)3/h4,6,15-16,18-19,23H,5,7-12H2,1-3H3/t15-,16-,18-,19-,20-,21+/m0/s1