Cl.O=C(NCCCN1CCN(CCCNC(=O)c2cc(-c3ccccc3)nc3ccccc23)CC1)c1cc(-c2ccccc2)nc2ccccc12
A rotatable bond is defined as any single non-ring bond, attached to a non-terminal, non-hydrogen atom. How many bonds in the molecule are rotatable?