COc1cc2cc(C(=O)N3CC(CCl)c4ccc([N+](C)(C)Cc5ccc([N+](=O)[O-])cc5)cc43)[nH]c2c(OC)c1OC.[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?