COc1cc(CN(C2CCCCC2C)S(=O)(=O)c2ccc(S(=O)(=O)NC3CC3)cc2)cc(OC)c1OC
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?