CCc1ccc(NCc2cc3cc4c(cc3n(CC(=O)Nc3ccccc3C)c2=O)OCCO4)cc1
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?