CC(=O)NC1C(Oc2ccc(C=O)cc2)OC(COC(C)=O)C(OC(C)=O)C1OC(C)=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?