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DERIVATIVES OF 2,5-DIOXO-1,2,5,6,7,8-HEXAHYFROQUINOLYN, PROCESS FOR PREPARING, INTERMEDIATES USED IN THIS PROCESS AS WELL AS A PROCESS FOR PREPARING THEESE INTERMEDIATES
DERIVATIVES OF 2,5-DIOXO-1,2,5,6,7,8-HEXAHYFROQUINOLYN, PROCESS FOR PREPARING, INTERMEDIATES USED IN THIS PROCESS AS WELL AS A PROCESS FOR PREPARING THEESE INTERMEDIATES