Cholestan-​3-​ol, 3-​[6-​[[(2S)​-​2-​amino-​5-​[(aminoiminomethyl)​amino]​-​1-​oxopentyl]​amino]​hexanoate]​, (3β,​5α)​-​, 2,​2,​2-​trifluoroacetate (1:2)