N-ethyl-5-butyl-6-oxo-6,7,8,9,10,11-hexahydro-5H-cyclohepta[c]quinoline-2-carboxamide

N-n-propyl-5-butyl-6-oxo-6,7,8,9,10,11-hexahydro-5H-cyclohepta[c]quinoline-2-carboxamide

N-cyclopropyl-N-ethyl-6-oxo-5-i-propyl-6,7,8,9,10,11-hexahydro-5H-cyclohepta[c]quinoline-2-carboxamide