CC(C)N(CCn1c2c3ccccc3ccc2c2oc(=O)c3ccccc3c21)C(C)C.Cl
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?