1-Piperazineacetamide, 4-methyl-N-(3-nitrophenyl)-N-phenyl-, (Z)-2-butenedioate (1:2) 118989-84-7 Acetamide, 2-(4-methyl-1-piperazinyl)-N-(3-nitrophenyl)-N-phenyl-, (Z)-2-butenedioate (1:2) N-(3-Nitrophenyl)-N-phenyl-2-(4-methyl-1-piperazinyl)acetamide dimaleate