InChI=1/C20H17NO4/c1-10-15(19(22)24-3)18-16(11(2)21-10)20(23)25-14-9-8-12-6-4-5-7-13(12)17(14)18/h4-9,18,21H,1-3H3/t18-/m1/s1 F60D9BCF190E5997