C(=C/c1ccccc1)\CN1CCN(C(c2cccc3ccccc23)c2nnnn2Cc2ccccc2)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?