Complex sentence: The company its organized into two following systems and one subsidiary: "MMX Corumbá" system, "MMX Sudeste Mineração" system and the subsidiary "Minera MMX de Chile".
Split into simpler sentences: The company its organized into two systems and one subsidiary. Those are the "MMX Corumbá" system, the "MMX Sudeste Mineração" system and the subsidiary "Minera MMX de Chile".