IUPAC:(11S,13E,14S,16S,18R)-18-carboxy-13-ethylidene-11-methyl-1,11-diazapentacyclo[12.3.1.0^{2,7}.0^{8,17}.0^{11,16}]octadeca-2,4,6,8(17)-tetraen-11-ium
IUPAC:(11S,13E,14S,16S,18R)-18-carboxy-13-ethylidene-11-methyl-1,11-diazapentacyclo[12.3.1.0^{2,7}.0^{8,17}.0^{11,16}]octadeca-2,4,6,8(17)-tetraen-11-ium