InChI=1S/C25H38O4/c1-15(5-8-22(28)29-4)18-6-7-19-23-20(10-12-25(18,19)3)24(2)11-9-17(26)13-16(24)14-21(23)27/h15-16,18-20,23H,5-14H2,1-4H3/t15-,16?,18-,19+,20+,23+,24+,25-/m1/s1