COC(=O)[C@H](Cc1ccccc1)NC(=O)N1CCCN(C(=O)N[C@@H](Cc2ccccc2)C(=O)OC)CCCN(C(=O)N[C@@H](Cc2ccccc2)C(=O)OC)CCC1
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?