Showing structure for 3,5,21,22,23-pentahydroxy-4,8,18-trioxo-11,12-bis(3,4,5-trihydroxybenzoyloxy)-9,14,17-trioxatetracyclo[17.4.0.0²,⁷.0¹⁰,¹⁵]tricosa-1(23),2,5,19,21-pentaen-13-yl 3,4,5-trihydroxybenzoate