33001-95-5 33001-98-8 Succinimide, N,N'-((2,5-dimethyl-1,4-piperazinediyl)dimethylene)bis(2-ethyl-2-methyl-, trans- trans-N,N'-((2,5-Dimethyl-1,4-piperazinediyl)dimethylene)bis(2-ethyl-2-methylsuccinimide)