O=C(O)c1cc(Cl)c2c(c1)[C@@H]1C=CC[C@@H]1[C@H](c1ccc(S(=O)(=O)N3CCOCC3)cc1)N2
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?