COC(=O)c1c(N2C(=O)[C@@H]3[C@@H]4CCCN4[C@@]4(C(=O)Nc5c4ccc(C)c5C)[C@@H]3C2=O)sc(C)c1C
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?