Showing structure for [4-(7-{5-[carboxy(4-hydroxyphenyl)methylidene]-4-hydroxy-2-oxofuran-3-yl}-12-hydroxy-3,4-dioxo-2-oxatricyclo[7.3.1.0⁵,¹³]trideca-1(13),5,7,9,11-pentaen-10-yl)-3-hydroxy-5-oxofuran-2-ylidene](4-hydroxyphenyl)acetic acid