InChI=1S/C21H32O6/c1-5-6-7-8-18(26-15(2)22)14-19(27-16(3)23)11-9-17-10-12-20(24)21(13-17)25-4/h10,12-13,18-19,24H,5-9,11,14H2,1-4H3