Cc1sc2ncnc(N3CCC(C(=O)NCC(=O)Nc4ccc(F)c(F)c4)CC3)c2c1C
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?