COc1ccc(C(C(=O)Nc2ccc3c(c2)OCO3)N(C)C(=O)Cc2c[nH]c3ccccc23)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?