Showing structure for [(4r,5s,7r,8r,9s,12s,13s,14s)-8,14,18,19-tetrahydroxy-7-(hydroxymethyl)-2,11,15-trioxo-5-(3,4,5-trihydroxybenzoyloxy)-3,6,10,16-tetraoxatetracyclo[11.7.1.0⁴,⁹.0¹⁷,²¹]henicosa-1(20),17(21),18-trien-12-yl]acetic acid