O=C1[C@H]2ON=C(c3ccc(F)cc3)[C@H]2C(=O)N1Cc1ccccc1
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?