Cc1ccc(S(=O)(=O)Nc2cc3c(cc2NCc2ccccc2)n(C)c(=O)n3C)c(C)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?