InChI=1S/C21H30O4/c1-12(22)21(25)9-7-16-14-5-4-13-10-17(23)18(24)11-19(13,2)15(14)6-8-20(16,21)3/h10,14-16,18,24-25H,4-9,11H2,1-3H3/t14-,15+,16+,18?,19+,20+,21+/m1/s1