Cc1cc(C)cc(C(=O)Nc2c3c(nn2-c2ccccc2C)CS(=O)(=O)C3)c1
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?