CCOC(=O)N1CCC(N2C(=O)c3ccc(C(=O)Nc4ccc(OC)cc4)cc3C2=O)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?