A benzenesulfonic acid salt of 2 - [(4S) -6- (4-chlorophenyl) -1-methyl-8- (methyloxy) -4H- [1,2,4] triazolo- [4,3- a] [ 1,4] -benzodiazepin-4-yl] -N-ethylacetamide.Una sal de ácido bencensulfónico de 2-[(4S)-6-(4-clorofenil)-1-metil-8-(metiloxi)-4H-[1,2,4]triazolo-[4,3- a][1,4]-benzodiazepin-4-il]-N-etilacetamida.