The superconducting critical temperature, Tc, of FeSe can be dramatically enhanced by intercalation of a molecular spacer layer. Here we report on a Se-77, Li-7, and H-1 nuclear magnetic resonance ( NMR) study of the powdered hyper-interlayer-expanded Li-x (C2H8N2)(y)Fe2-zSe2 with a nearly optimal T-c = 45 K. The absence of any shift in the Li-7 and H-1 NMR spectra indicates a complete decoupling of interlayer units from the conduction electrons in FeSe layers, whereas nearly temperature-independent Li-7 and H-1 spin- lattice relaxation rates are consistent with the non-negligible concentration of Fe impurities present in the insulating interlayer space. On the other hand, the strong temperature dependence of 77Se NMR shift and spin- lattice relaxation rate, 1/T-77(1), is attributed to the holelike bands close to the Fermi energy. 1/T-77(1) shows no additional anisotropy that would account for the onset of electronic nematic order down to Tc. Similarly, no enhancement in 1/T-77(1) due to the spin fluctuations could be found in the normal state. Yet, a characteristic power-law dependence 1/T-77(1) alpha T-4.5 still complies with the Cooper pairing mediated by spin fluctuations.