InChI=1S/C24H38O4/c1-15(6-9-21(27)28)17-7-8-19-22-18(10-12-24(17,19)14-25)23(2)11-4-3-5-16(23)13-20(22)26/h15-19,22,25H,3-14H2,1-2H3,(H,27,28)/t15?,16?,17?,18?,19?,22?,23-,24-/m0/s1