This patent application discloses a compound according to formula I ' as shown below, or a pharmaceutically acceptable salt thereof: In this formula, Ring D, the ring A, ring E, ring F, J B, n, J D, J, o, R C1, R C2, W, J E, r, J F, s, Z 1, Z 2 and Z 3 Lt; / RTI > are as defined herein.