CC1=CC2OC3CC4OC(=O)/C=C\C=C\C(C(C)O)OCCC(C)C(O)C(=O)OCC2(CC1O)C4(C)C31CO1
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?