COc1ccc(-c2nnn(CC(=O)N(CC3CCCO3)C(C(=O)NC(C)(C)C)c3ccco3)n2)cc1OC
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?