COc1ccc(CNC(=O)c2ccc3c(c2)N(C)C(=O)C[S+]3[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?