CC(=O)OC1CC2C(C)(C)C(=O)C=C[C@]2(C)C2CC[C@]3(C)C(=CC(=O)OC3c3ccoc3)[C@]12C
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?