COc1cc(OC)c(NS(=O)(=O)c2ccc(Cl)c(C(=O)OC(C)C(=O)N3CCCC3)c2)cc1Cl
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?