O=C(NCc1ccc2c(c1)OCO2)c1ccc(N2C(=O)C3CCCCC3C2=O)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?