C=CC1=C2C=C(C3CC3)N(C(CO)CO)C=C2C(=O)C(C)(OC(=O)c2ccco2)C1=O
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?