CCOC(=O)N1C=CC(=C2C(=C3C=CN(C(=O)OCC)C=C3)C(=C3C=CN(C(=O)OCC)C=C3)C2=C2C=CN(C(=O)OCC)C=C2)C=C1
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?