Eight friends M, N, O, P, Q, R, S and T have different number of toffees. P have more number of toffees than R. Only two people have less number of toffees than O. T have the highest number of toffees. N have less number of toffees than only one person.M have the least number of toffees. Q have less number of toffees than R but more than that of S. Who have the fourth lowest number of toffees?