Showing structure for methyl 4,6,14-trihydroxy-2,12,13,13-tetramethyl-8,15-dioxo-7,11-dioxatetracyclo[7.6.1.0⁵,¹⁶.0¹⁰,¹⁴]hexadeca-1,3,5(16),9-tetraene-6-carboxylate