CC(C)C[C@@H](CC(=O)N[C@@H](CCC(=O)O)CC(=O)O)NC(=O)[C@@H]1CNCC[C@H]1NC(=O)C[C@H](CCCN)NC(=O)C[C@H](Cc1ccccc1)NC(=O)[C@@H]1CCCC[C@H]1N
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?