CCOc1ccc2nc(NC(=O)/C(CC(=O)CC(C3=C(O)c4ccccc4CC3=O)c3ccccc3)=N\O)sc2c1
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?