InChI=1S/C17H16O6/c1-20-15-5-13-9(4-12(15)19)17-10(7-22-13)8-3-11(18)16(21-2)6-14(8)23-17/h3-6,10,17-19H,7H2,1-2H3/t10-,17-/m0/s1