Showing structure for 4-(hex-4-enoyl)-3,6,7,12-tetrahydroxy-13-(1-hydroxyhexa-2,4-dien-1-ylidene)-2,6,9,11-tetramethyl-8-oxatricyclo[7.4.0.0²,⁷]trideca-3,11-diene-5,10-dione