CC(=O)c1ccc(OCCCC(=O)Nc2ccc(C)c(S(=O)(=O)N3CCOCC3)c2)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?