RNA.YIL . Previously, we showed that a slippage phenomenon occurs in the context of r(G4C2)2 through 70 µs long MD simulations using the RNA.YIL force field with revised α/γ torsional parameters (dubbed RNA.YIL.AG) . This force field was able to recapitulate experimental observations where 2×2 GG/GG loops are short lived and convert to 1×1 G/G loops, as observed in apo form of r(G4C2)4 .