CN(C)CCn1c(=O)nc2c3c(c([N+](=O)[O-])ccc31)Nc1ccc(O)cc1-2.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?