Showing structure for 3,4,6-trimethoxy-16-(2-methoxyethylidene)-10-oxa-8,14-diazahexacyclo[11.6.1.0¹,⁹.0²,⁷.0¹²,¹⁷.0¹⁴,¹⁹]icosa-2,4,6,8-tetraene