Showing structure for 17-[(acetyloxy)(furan-3-yl)methyl]-3,19-dihydroxy-9-methoxy-16,21-bis(2-methoxy-2-oxoethyl)-2,5,9,14,17-pentamethyl-8,10,13,15,20-pentaoxaheptacyclo[12.5.1.1²,⁵.0¹,¹².0³,⁷.0⁷,¹¹.0¹²,¹⁶]henicosan-6-yl 2-methylbut-2-enoate