COc1ccc(CNC(=O)[C@H](C)[C@H]2C[C@]2(C)[C@H](NC(=O)OCc2ccccc2)c2ccccc2)cc1OC
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?