InChI=1S/C27H44O4/c1-18-7-10-22(29)15-21(18)9-8-20-6-5-13-27(4)24(11-12-25(20)27)19(2)14-23(30)16-26(3,31)17-28/h8-9,19,22-25,28-31H,1,5-7,10-17H2,2-4H3/b20-8+,21-9+/t19-,22+,23+,24-,25+,26-,27-/m1/s1