120873-29-2 Acetamide, N-(4,5-dihydro-5-oxo-1H-pyrido(2,3-e)(1,2,4)triazepin-2-yl)- N-(3,4-Dihydro-5-oxo-5H-pyrido(2,3-e)(1,3,4)triazepin-2-yl)acetamide