Cc1cccc(COCC(Cc2ccccc2)N2CCN(C(=O)c3ccc(Cl)c(Cl)c3)CCC2=O)c1
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?