InChI=1S/C21H26O3/c1-4-21(23)10-8-17-19-16(7-9-20(17,21)2)15-6-5-14(22)11-13(15)12-18(19)24-3/h1,5-6,11,16-19,22-23H,7-10,12H2,2-3H3/t16-,17+,18?,19-,20+,21+/m1/s1