InChI=1S/C21H30O4/c1-11(2)14-10-12-6-7-15-17(16(12)19(25-5)18(14)22)13(20(23)24)8-9-21(15,3)4/h10-11,13,15,17,22H,6-9H2,1-5H3,(H,23,24)/t13-,15-,17?/m1/s1