COc1ccc(CNC(=O)C2Cc3cc(S(=O)(=O)N4CCCC4)ccc3N2C(C)=O)c(OC)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?