Showing structure for (16s,20r)-4,5,9,10-tetramethoxy-16-azapentacyclo[12.7.0.0²,⁷.0⁸,¹³.0¹⁶,²⁰]henicosa-1(14),2(7),3,5,8(13),9,11-heptaen-16-ium-16-olate