Cc1cc2nc(N3C(=O)/C(=C/c4cccc([N+](=O)[O-])c4)N=C3c3ccccc3)sc2cc1C
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?