COc1ccc(CC2C(=O)NC(C)C(=O)N(C)C3Cc4ccc(cc4)Oc4cc(ccc4O)CC(C(=O)NC(C)C(=O)NC(C)C(=O)N2C)N(C)C3=O)cc1
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?