C=C1C(=O)[C@]23C[C@H]1CCC2[C@@]1(C)C(C[C@@H]3O)[C@](C)(C(=O)OC)CC[C@@H]1OC(C)=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?