Separating final column

hello i would like to know if there is a way of separating the final column of an excel, the name is always random and the amount of columns is random but i need to work in a loop since it will be over 100 documents each one with a different value that i need the only consistent part is that is in the final column so i would like to know if there is a way to separate the final column from a excel (maybe a node or some way of coding into deleting every thing except the final column)