InChI=1S/C24H38O4/c1-15(6-9-21(27)28)17-7-8-18-22-19(10-12-23(17,18)2)24(14-25)11-4-3-5-16(24)13-20(22)26/h15-19,22,25H,3-14H2,1-2H3,(H,27,28)/t15?,16?,17?,18?,19?,22?,23-,24-/m1/s1