COc1ccccc1N1C(=O)[C@H]2[C@@H](C1=O)[C@@H]1C=CC=NN1[C@H]2C(=O)c1ccc(OC(C)=O)cc1
A rotatable bond is defined as any single non-ring bond, attached to a non-terminal, non-hydrogen atom. How many bonds in the molecule are rotatable?