O=C1N/C(=C\c2ccc(N3CCOCC3)c(F)c2)C(=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?