CC(C)C[C@H]1CN([C@@H](Cc2ccccc2)CN2CCC[C@@H]2CN2C(=O)C(=O)NC[C@@H]2Cc2ccccc2)C(=O)C(=O)N1CCc1ccccc1
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?