InChI=1S/C20H24O5.K/c1-10-8-19-9-17(10,2)6-4-11(19)20-7-5-12(21)18(3,16(24)25-20)14(20)13(19)15(22)23;/h5,7,11-14,21H,1,4,6,8-9H2,2-3H3,(H,22,23);/q;+1/p-1/t11?,12-,13+,14?,17+,18-,19?,20?;/m0./s1