COc1ccc2c(c1)C(C)=CC(C)(C)N2S(=O)(=O)c1ccc(NC(C)=O)cc1
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?