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We perform a molecular (CO and CN) line observation using IRAM 30m telescopetoward two small regions near the western edge of supernova remnant (SNR)W50/SS433. CO observation reveals spatial correspondence of two molecularclumps at the local-standard-of-rest (LSR) velocity around +53 km s$^{-1}$ withmultiwavelength local features of W50/SS433 system. One of the two clumpsappears to be embedded in a void of diffuse radio and X-ray emission. Towardthe two clumps, asymmetric broad line profiles of the $^{12}$CO lines areobtained, which provide kinematic evidence of the association between theclumps and the jet-related gas. The $^{12}$CO $J=2-1$/$J=1-0$ line ratios ($>0.9$) and the kinetic temperatures ($\sim 30$ K) of the clumps aredistinctively higher than all those of the clumps at other LSR velocities alongthe same line of sight, which may be physical signatures of the association. Weshow that the clump coincident with the void can survive the thermal heating ifit is surrounded by hot gas, with an evaporation timescale much larger than theage of SNR W50. We also show that the thermal equilibrium in the hightemperature clumps can be maintained by the heating of the penetratingenvironmental CRs. CN ($J=3/1-1/2$) line emission is detected in the twoclumps, and the CN abundances derived are much higher than that in theinterstellar molecular clouds (MCs) and that in the SNR-interacting MCs.

A Small-Scale Investigation of Molecular Emission toward the Tip of the Western Lobe of W50/SS433