Similar with Fig. 4. However, we adopt a rotational velocity dominated model (ψ = 0° for r> 0.16 pc; ψ = 15° for r< 0.16 pc). In this model, the motions outside of the 0.16 pc radius is purely rotational. Inward of the 0.16 pc radius, the velocity vectors are twisted toward the center by 15°. This gives some infall velocity in the inner regions that is necessary to explain the PV diagram. Besides, adding little infall velocity suppress the velocity degeneracy during the de-projection. The de-projected image shows smoothed large scale structure (≳0.5 pc), and shows molecular arms within the central ~0.15 pc radius.