Showing structure for [(1s,2s,3r,6s,8r,9r,10r,11r,12s,13r)-8-acetyl-3-{[(2e)-3,4-dimethylpent-2-enoyl]oxy}-11,12-dihydroxy-13-(methoxycarbonyl)-9-methyl-4-oxo-14-oxatetracyclo[8.5.0.0¹,⁶.0²,¹³]pentadecan-9-yl]acetic acid