label: 6-(4-acetamidophenyl)-1,2,3,4,4a,10b-hexahydro-8,9-dimethoxy-2-methylbenzo(c)(1,6)-naphthyridine-bis(hydrogen maleate)
label_lc: 6-(4-acetamidophenyl)-1,2,3,4,4a,10b-hexahydro-8,9-dimethoxy-2-methylbenzo(c)(1,6)-naphthyridine-bis(hydrogen maleate)