C[C@@H](CO)N1C[C@@H](C)[C@H](CN(C)C(=O)[C@H](C)c2ccccc2)OCc2ccccc2-c2c(n(C)c3ccccc23)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?