Patent ID: 7129368

Claim:
A compound having the formula wherein X 1 and X 2 are independently selected from the group consisting of ammonia, amino, nitro, C1–C6 alkoxy, hydroxy, chloride, bromide, and iodide; wherein Y 1 and Y 2 are independently selected from the group consisting of a direct bond from the cycloalkane ring to the nitrogen atom and a C1–C6 straight chain or branched alkyl group; wherein Z 1 is C(R 1 )R 2 , wherein R 1 and R 2 are independently hydrogen or C1–C6 straight chain or branched alkyl; wherein Z 2 is C(R 3 )R 4 , wherein R 3 and R 4 are independently hydrogen or C1–C6 straight chain or branched alkyl; and wherein m=0, 1, 2, 3, 4, or 5, n=0, 1, 2, 3, 4, or 5, provided that m+n≧2 and m+n≦5.