CCCN1CCN(CC2=C(C(=O)OCC)C(c3ccc(OC(C)C)cc3)NC(=O)N2)CC1
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?