CCOC(=O)c1oc2ccc(S(=O)(=O)n3nc(-c4ccc(C)cc4)cc3N)cc2c1C
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?