Showing structure for 17,18-dimethoxy-7,10-dioxa-4,14-diazaheptacyclo[10.8.3.2¹¹,¹⁴.0¹,¹³.0⁶,⁸.0⁶,²³.0¹⁵,²⁰]pentacosa-15(20),16,18-triene-21,24-dione