CCCCN(C(=O)c1cccc(S(=O)(=O)N(C)c2ccc(C)cc2)c1)c1c(N)n(CC(C)C)c(=O)[nH]c1=O
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?