Cc1ccc(S(=O)(=O)Nc2ccc3c(c2)nc(CCN2CCN(c4ccccn4)CC2)n3C)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?