COc1ccc2[nH]c3c(C)c4ccnc(NCCCN(C)CCCNc5ccc6ncn7c8ccccc8c(=O)c5c67)c4c(C)c3c2c1.CS(=O)(=O)O
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?