Aspidospermidine-3-carboxylic acid, 4-(acetyloxy)-6,7-didehydro-15-((2R,4R,6S,8S)-4-(1,1-difluoroethyl)-1,3,4,5,6,7,8,9-octahydro-8-(methoxycarbonyl)-2,6-methano-2H-azecino(4,3-b)indol-8-yl)-3-hydroxy-16-methoxy-1-methyl-, methyl ester, (2beta,3beta,4beta,5alpha,12R,19alpha)-

Vinflunine is an organic heteropentacyclic and heterotetracyclic compound, derived from vinorelbine by reducing the tetrahydropyridine moiety of the heterotetracyclic part to piperidine and replacing the ethyl group with a 1,1-difluoroethyl group. It functions as an antineoplastic agent, is a semisynthetic derivative, methyl ester, acetate ester, and vinca alkaloid, and is functionally related to vinorelbine.