Showing structure for {11-ethyl-8,9-dihydroxy-6,16,18-trimethoxy-4-[(2-methylbutanoyl)oxy]-11-azahexacyclo[7.7.2.1²,⁵.0¹,¹⁰.0³,⁸.0¹³,¹⁷]nonadecan-13-yl}methyl 2-(3-methyl-2,5-dioxopyrrolidin-1-yl)benzoate