O=C1CC(N2CCC(O)(c3ccc(Cl)cc3)CC2)C(=O)N1Cc1ccc(N2CCCC2=O)cc1
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?