COc1ccc(CN2CC[C@H]3C=CC[C@@H](C(=O)N4CCOCC4)[C@H]3C2=O)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?