InChI=1S/C30H44O4/c1-19(26(33)34)8-7-9-20(18-31)21-12-16-30(6)23-10-11-24-27(2,3)25(32)14-15-28(24,4)22(23)13-17-29(21,30)5/h8,18,20-21,24H,7,9-17H2,1-6H3,(H,33,34)/b19-8+