InChI=1S/C21H24O5/c1-12-13(2)21(15-6-8-17-19(10-15)25-11-24-17)26-20(12)14-5-7-16(22-3)18(9-14)23-4/h5-10,12-13,20-21H,11H2,1-4H3/t12-,13+,20-,21-/m1/s1