Showing structure for methyl (1s,2r,4r,10s,12r,14s,15s)-2-(acetyloxy)-12-methyl-17-oxo-4-(prop-1-en-2-yl)-11,16,18,19-tetraoxapentacyclo[12.2.2.1⁶,⁹.0¹,¹⁵.0¹⁰,¹²]nonadeca-6,8-diene-7-carboxylate