InChI=1S/C23H38O4/c1-17(2)7-5-10-21(16-27-19(4)26)22-12-11-18(3)8-6-9-20(15-25)23(22)13-14-24/h7-9,21-25H,5-6,10-16H2,1-4H3/t21-,22-,23?/m0/s1