Showing structure for 4-[11-ethoxy-15-hydroxy-6,6,19,23,23-pentamethyl-26-(2-methylbut-3-en-2-yl)-9,13-dioxo-2,7,24-trioxaheptacyclo[12.12.0.0³,⁸.0³,¹².0⁵,¹⁰.0¹⁶,²⁵.0¹⁷,²²]hexacosa-1(26),14,16(25),17,19,21-hexaen-8-yl]-2-methylbut-2-enoic acid