InChI=1S/C27H38O3/c1-21(11-7-8-12-22(2)15-10-18-28)13-9-14-23(3)16-17-27-25(4,5)19-24(29)20-26(27,6)30-27/h7-17,24,28-29H,18-20H2,1-6H3/b8-7+,13-9+,15-10+,17-16+,21-11+,22-12+,23-14+