O=[N+]([O-])c1ccc2c(c1)C(N1CCOCC1)/C(=C/COc1ccc(F)cc1)O2
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?