Macro to extract file names when importing multiple files

I have a macro to import several files in Col A:H

I would like the macro amended so as to extract the file names in Col I in the destination file for each of the files imported

Your assistance in this regard is most appreciated

 Sub Open_MultipleFiles()
ChDir "C:\Extract"
Dim lr As Long

With Sheets("Imported Data")
lr = .Cells(.Rows.Count, "A").End(xlUp).Row
Range("A2:J" & lr).ClearContents

Dim fDialog As Object, varFile As Variant
Dim nb As Workbook, tw As Workbook, ts As Worksheet
With Application
    .ScreenUpdating = False
    .Calculation = xlCalculationManual
    .CutCopyMode = False
End With
Set tw = ThisWorkbook
Set ts = tw.ActiveSheet
Set fDialog = Application.FileDialog(3)
ChDir "C:\extract"
With fDialog
  .Filters.Clear
  .Filters.Add "Excel files", "*.csv*"
   .Show
   
   For Each varFile In .SelectedItems
      Set nb = Workbooks.Open(Filename:=varFile, local:=True)
      
     With Sheets(1)
   .Range("A1:H500").Copy
    ThisWorkbook.Sheets("Imported Data").Range("A" & Rows.Count).End(xlUp).Offset(1).PasteSpecial xlPasteValues
    ThisWorkbook.Sheets("Imported Data").Range("A" & Rows.Count).End(xlUp).Offset(1).PasteSpecial xlPasteFormats

End With
      
        
        nb.Close False
   Next
End With
With Sheets("Imported Data")
.Range("A1").EntireRow.Delete
.Range("A:H").EntireColumn.AutoFit

  End With
  

With Application
    .ScreenUpdating = True
    .Calculation = xlCalculationAutomatic
    .CutCopyMode = True
End With

 End With
ChDir "C:\my documents"

End Sub