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