The 95% upper limit on the chirp mass of any SMBHBs in the Virgo Cluster as a function of GW frequency. We found that there are no SMBHBs in the Virgo Cluster with ﹩{ \mathcal M }\gt 1.6(1)\times {10}^{9}\,{M}_{\odot }﹩ emitting GWs in this frequency band. At ﹩{f}_{\mathrm{gw}}=9\,\mathrm{nHz}﹩, we placed an upper limit of 3.8(1) × 108 M⊙.