Luteinizing hormone-releasing factor, 6-(1-(phenylmethyl)-D-histidine)-9-(N-ethyl-L-prolinamide)-10-deglycinamide-
5-oxo-L-prolyl-L-histidyl-L-tryptophyl-L-seryl-L-tyrosyl-Nτ-benzyl-D-histidyl-L-leucyl-L-arginyl-N-ethyl-L-prolinamide