Update a field with the content of other fields separated by a symbol but not if they are empty

Hi, I am trying to fill in a field with the content of 5 other fields separated by an underscore.

I manage to get Field1_Field2_Field3_Field4_Field5 but if one or more of the fields are empty I get a consecutive underscores like this: Field1__Field3_
Is there a way I can tell airtable not to include the underscores that would be followed by empty fields?