COC(=O)C(NC(=O)C12CCC(C)(C(=O)O1)C2(C)C)c1cc(C(C)(C)C)c(O)c(C(C)(C)C)c1
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?