Eight employees sit in a single row, facing the same direction. Positions are numbered 1 to 8 from the left end. The employees are Mahesh, Nalini, Ojas, Pankaj, Rani, Shweta, Trisha and Usha. Pankaj sits at position 4 in the row. Rani sits immediately to the right of Pankaj. Ojas sits immediately to the left of Pankaj. Mahesh sits at the leftmost position. Trisha does not sit immediately next to Mahesh. Usha sits at the rightmost position. Nalini sits at position 7. Who sits second to the right of Mahesh?