Showing structure for methyl 2-[(1s,6s,9r,10s,15s)-15-methoxy-6,9,10-trimethyl-5-methylidene-13-oxo-14,17-dioxatetracyclo[8.7.0.0¹,⁶.0¹²,¹⁶]heptadec-12(16)-en-15-yl]acetate