Tinu, Chinu, Pinto, Nitu and Sheenu are five friends sitting in a row facing north. Sheenu is sitting exactly between Chinu and Nitu. Pinto is not the immediate neighbour of Chinu and sits immdiate left of Tinu, who does not sit at extreme end. Chinu is sitting second to the left of Nitu. Who among the following is sitting to the immediate left of Chinu?