CCOC(=O)C1(Br)C(c2ccccc2)NC(=O)N(C2OC(COC(=O)c3ccccc3)C(OC(=O)c3ccccc3)C2OC(=O)c2ccccc2)C1(C)Br
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?