COc1ccc(C2CC(c3c(O)nc4ccc(Cl)cc4c3-c3ccccc3)=NN2S(C)(=O)=O)cc1OC
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?