CCOC(=O)C1CCN(c2c(Nc3ccc4c(c3)OCCO4)c(=O)c2=O)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?