CC(C)Cn1c(N)c(C(=O)COC(=O)c2c(O)c(Cl)cc(Cl)c2Cl)c(=O)n(C)c1=O
A rotatable bond is defined as any single non-ring bond, attached to a non-terminal, non-hydrogen atom. Amide C-N bonds are not counted because of their high barrier to rotation.  How many rotatable bonds does the molecule have?