CC1(C(=O)Nc2ccc3[nH]cnc3c2)CCN1C(=O)Cc1ccc(-c2ccccc2)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?