(2Z)-2-(2-hydroxybenzylidene)-6-methoxy-1-benzofuran-3(2H)-one 3(2H)-benzofuranone, 2-[(2-hydroxyphenyl)methylene]-6-methoxy-, (2Z)- InChI=1/C16H12O4/c1-19-11-6-7-12-14(9-11)20-15(16(12)18)8-10-4-2-3-5-13(10)17/h2-9,17H,1H3/b15-8