Complex sentence: The mean role of NADPH in human organism is the synthesis of lipids and the detoxification of the organism, in collaboration with the Cytochrome P450 to produce some ROS (Reactives Oxygen Species).
Split into simpler sentences: The mean role of NADPH in human organism is the synthesis of lipids and the detoxification of the organism. It collaborates withe the Cytochrome P450 to produce some ROS (Reactives Oxygen Species).