Cc1ccc2oc(C(=O)Nc3ccc(S(=O)(=O)Nc4onc(C)c4C)cc3)cc(=O)c2c1
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?