COC(=O)Cc1c[nH]c2cccc(OCC(O)CN(Cc3ccc([N+](=O)[O-])cc3)C(C)(C)C)c12.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?