Cc1c2cnn(CC(=O)N3CCN(c4ccc(F)cc4)CC3)c(=O)c2c(C)n1Cc1ccccc1F
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?