O=C1C=CC(S(=O)(=O)C2=C/C(=C/Nc3ccc(Cl)cc3)C(=O)C=C2)=C/C1=C/Nc1ccc(Cl)cc1
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?