InChI=1S/C28H32O5/c1-17(2)9-8-10-19-13-14-21(20-11-6-5-7-12-20)22(15-19)27(32)24-26(31)18(3)25(30)23(16-29)28(24)33-4/h5-7,9,11-13,16,21-22,30-31H,8,10,14-15H2,1-4H3/t21-,22+/m1/s1