(Common-Lisp Language) Write a lisp program to check whether the two binary trees have the same structure. The structure of a binary tree is represented through list as (root left right). For two trees to have same structure the values dont need to be the same. A sample tree structure can be displayed as:

(23 (9 (5)) (18 9 (45 14 27)))

23 9 18 9 45 5 27 14