COc1ccc(OC)c(C2=NS(=O)(=O)N(C)C(C(=O)Nc3ccc(C(C)=O)cc3)=C2)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?