COc1cc2cc(C(c3nnnn3Cc3ccc(F)cc3)N3CCCCCC3)c(O)nc2cc1OC
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?