COc1cc([C@@H]2c3cc4c(cc3[C@@H](NCc3ccc(C#N)cc3)C3COC(=O)[C@@H]32)OCO4)cc(OC)c1O
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?