(2Z)-2-(2-hydroxybenzylidene)-1-benzofuran-3(2H)-one 3(2H)-benzofuranone, 2-[(2-hydroxyphenyl)methylene]-, (2Z)- InChI=1/C15H10O3/c16-12-7-3-1-5-10(12)9-14-15(17)11-6-2-4-8-13(11)18-14/h1-9,16H/b14-9