Showing structure for 9,10,15-trihydroxy-16-(1-hydroxyhexa-2,4-dien-1-ylidene)-1,9,12,14-tetramethyl-4-(prop-1-en-1-yl)-3,11-dioxatetracyclo[8.7.0.0²,⁷.0¹²,¹⁷]heptadeca-2(7),14-diene-6,13-dione