COc1ccc(C)cc1N1CC(C(=O)OCc2nc(N)nc(Nc3ccccc3C)n2)CC1=O
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?