NC(=O)c1cccc2[nH]c(-c3ccc(NC(=O)c4cccc(S(=O)(=O)N5CCOCC5)c4)cc3)nc12
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?