CC(=O)NC1(C(=O)N[C@@H](Cc2ccccc2)C(=O)NC2CCCCC2)Cc2ccc3ccccc3c2-c2c(ccc3ccccc23)C1
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?