[en] The remarkable property of minimization of rescattering effects in the inverse pion electroproduction (IPE) at low energies at the 'quasi-threshold' allows one to justify a method of determining the weak structure (in addition to the electromagnetic one) of a nucleon from experimental data on this process by using the current algebra description. The result of extracting the pseudoscalar nucleon form factor G_P(t) by that method from the IPE data in the first πN resonance region is presented, where the definite indication of the existence of the state π' in the range 500-800 MeV (possibly the first radial excitation of pion) is obtained