Showing structure for 2-[2-(acetyloxy)-7,10,14,16-tetrahydroxy-5-methyl-9,11-dioxopentacyclo[10.7.2.0¹,¹⁰.0³,⁸.0¹³,¹⁸]henicosa-3,5,7,13,15,17,20-heptaene-15-carbonyl]-3,6-dihydroxybenzoic acid