COC(=O)CC=CC(C)C(C=NOCC(O)C1OC2OC(C)(C)OC2C1O)OC
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?