Cc1ccc(C)c2nc(O)c(C(c3nnnn3Cc3ccco3)N3CCc4ccccc4C3)cc12
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?