CCN(C(=O)COC(=O)C1CC1C)c1c(N)n(Cc2ccccc2)c(=O)[nH]c1=O
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?