CCOc1cc(C(=O)Nc2ccc(S(=O)(=O)Nc3cc(C)on3)cc2)cc(OCC)c1OCC
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?