106039-84-3 BRN 6256149 L-Valinamide, N(sup 2)-(((2-chloroethyl)nitrosoamino)carbonyl)-N(sup 6)-formyl-L-lysyl-L-prolyl- N(sup 2)-(((2-Chloroethyl)nitrosoamino)carbonyl)-N(sup 6)-formyl-L-lysyl-L-prolyl-L-valinamide