CCOC(=O)N1CCN(S(=O)(=O)c2ccc(C(=O)N(CCCN(C)C)c3nc4ccc(Cl)cc4s3)cc2)CC1.Cl
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?