CCCC(CCC)C(=O)OC[N+](C)(C)CCOC(=O)C(O)(c1ccccc1)C1CCCC1.[Cl-]
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?