CC1=C(C(=O)Nc2ccc(Cl)c(Cl)c2)C(c2ccco2)C(C(=O)Nc2ccc(Cl)c(Cl)c2)=C(C)N1
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?