InChI=1/C19H18O5/c1-3-23-14-6-4-5-12(10-14)9-13-7-8-15-16(17(13)20)11(2)18(24-15)19(21)22/h4-6,9-10H,3,7-8H2,1-2H3,(H,21,22)/p-1/b13-9+/fC19H17O5/q-1 246D48B8529D5F51