C=C(C)C(=O)O[C@@H]1C/C(C)=C\[C@H](OC(C)=O)C[C@](C)(O)/C=C2/OC(=O)C(COC(C)=O)=C21
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?