InChI=1S/C21H36O7/c1-5-15(11-17-7-8-18(27-17)13(3)20(23)24)28-21(25)14(4)19-9-6-16(26-19)10-12(2)22/h12-19,22H,5-11H2,1-4H3,(H,23,24)/t12-,13-,14+,15+,16-,17+,18-,19+/m1/s1