CC(=O)OCC1OC(CCON=CC(C)C(OCc2ccccc2)C(C)C)C=CC1OC(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?