Further, it is transferable to other sizes of alkanes. (This is analogous to the transferablity of the many-body water potentials, such as q-AQUA. ) We recently tested this transferabilty for alkanes from C 4 H 10 to C 30 H 62 and the excellent results will be reported shortly. Finally, it is worth noting a loose connection between the above representation and the N -mode representation of the potential 66 and fitting the terms using polynomial, 12 GPR 67 and NN 68 regression.