COCCCN1C(=O)C(O)=C(C(=O)c2ccc(OC)cc2)C1c1ccc(O)c(OC)c1
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?