Showing structure for (2e)-4-[(1s,2s,9s,14r,21s,23r)-16-hydroxy-8,8,12,25,25-pentamethyl-5-(3-methylbut-2-en-1-yl)-18,22-dioxo-3,7,24-trioxaheptacyclo[19.4.1.0²,¹⁹.0²,²³.0⁴,¹⁷.0⁶,¹⁵.0⁹,¹⁴]hexacosa-4,6(15),12,16,19-pentaen-23-yl]-2-methylbut-2-enoic acid