Showing structure for 1-{17,18,19-trimethoxy-5,7-dioxa-13-azapentacyclo[10.7.1.0²,¹⁰.0⁴,⁸.0¹⁶,²⁰]icosa-1(20),2,4(8),9,16,18-hexaen-13-yl}ethanone