Showing structure for methyl 2-[(1r,3s,7r,8r,9s,12s,13s)-13-(furan-3-yl)-6,6,8,12-tetramethyl-17-methylidene-5,15-dioxo-2,14-dioxatetracyclo[7.7.1.0¹,¹².0³,⁸]heptadecan-7-yl]acetate