Checking to see if a character exists in a string

I have a list of products with and with out product IDs.

Product(ID#)
Product
Product(ID#)
Product
Product(ID#)
Product
Product
Product(ID#)

In the column next to them I want it to display null if there is an ID.

If there is not an ID I want it to VLOOKUP to find the ID

This is the formula I have been trying to use.

IF(FIND("(",A5)>0, VLOOKUP(A5,'IMOS-RE'!$B$1:$W$300,3,FALSE), "Null")

I need the formula to rely on the parenthesis ( or ). They are the only character that is guaranteed to be only in the ones with IDs.

The problem I am having is that FIND errors with #VALUE because it does not find the "(".