Novel compounds of the general formula, the use of these compounds as pharmaceutical compositions, pharmaceutical compositions comprising the compounds and methods of treatment employing these compounds and compositions. The lead system further includes a non-stationary electrode member and an electrical interconnect electrically connected between the non-stationary electrode member and the stationary electrode member. The blocks correspond to segments of the programming code, and are associated with type-based constraints that relate to types of variables that are used by the block. , transverse effective linear E-O coefficient yTc more than 1100 pmV and longitudinal effective linear E-O coefficient ytc up to 527 pmV, which results in a very low half-wavelength voltage Vtx below 200V and Vtx below about 87V in a wide number of modulation, communication, laser, and industrial uses. In another embodiment, if the initial comparison is inconclusive, additional speech samples are received.