Showing structure for [(1r,2s,10r,12r,13r)-12-cyano-16,19-dihydroxy-7,18-dimethoxy-6,17,21-trimethyl-5,8,14-trioxo-11,21-diazapentacyclo[11.7.1.0²,¹¹.0⁴,⁹.0¹⁵,²⁰]henicosa-4(9),6,15,17,19-pentaen-10-yl]methyl (2z)-2-methylbut-2-enoate