O=C(O)C(=O)O.O=C(c1cccc(Cl)c1)N1CCN(Cc2c[nH]c3ccccc23)CC1
A rotatable bond is defined as any single non-ring bond, attached to a non-terminal, non-hydrogen atom. Amide C-N bonds are not counted because of their high barrier to rotation.  How many rotatable bonds does the molecule have?