Showing structure for (1r,12r,20s)-15,16-dimethoxy-20-methyl-5,7-dioxa-20-azapentacyclo[10.7.1.0²,¹⁰.0⁴,⁸.0¹³,¹⁸]icosa-2,4(8),9,13(18),14,16-hexaen-20-ium-20-olate