InChI=1S/C27H32O4/c1-17-19-11-14-30-22(19)16-21-20(17)15-23(31-24(28)18-9-6-5-7-10-18)27(29)25(2,3)12-8-13-26(21,27)4/h5-7,9-11,14,20-21,23,29H,1,8,12-13,15-16H2,2-4H3/t20-,21-,23+,26+,27+/m0/s1