Cc1cc(NC(=O)NC(=O)c2ccccc2NC(=O)CN)ccc1Oc1ncc(Br)cn1.Cl
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?