Excel Lookup/IF statement

Hi

I have 4 cells in a row that contain If statements but essentially either produce FALSE or a text value i.e. TTF, or BBVP L, etc. In the 5th cell, I need to extract this text value from whatever one of the previous 4 cells it's in, and if there are no entries in these cells (because there is no data) then no value is required in the 5th cell.

Example of how it could look

1 2 3 4 DESIRED 5
FALSE FALSE FALSE TTF TTF
FALSE BBVP-L FALSE FALSE BBVP-L
FALSE FALSE EGTHUB FALSE EGTHUB

Simple solution is to choose whichever cell is not false, or alternative is 5 look up against a list of lets say TTF, BBVP-L, EGTHUB and whatever it matches across the row of 4 cells thats in this list it picks

Any help would be hugely appreciated, as I believe its the last bit of the puzzle