Showing structure for (1r,18s,21s)-18-hydroxy-4,5-dimethoxy-2,18-bis(methoxycarbonyl)-2,12-diazahexacyclo[14.2.2.1⁹,¹².0¹,⁹.0³,⁸.0¹⁶,²¹]henicosa-3(8),4,6-trien-12-ium-12-olate