Showing structure for [22-(acetyloxy)-4-hydroxy-4,9,11,19,19-pentamethyl-5,10,24-trioxo-2,6,18,25-tetraoxaheptacyclo[12.10.1.1¹,⁸.0³,⁷.0¹⁴,²³.0¹⁶,²⁰.0¹¹,²⁶]hexacos-16(20)-en-17-yl]acetic acid