COC1=C[C@H]2C3=C([C@H]2C1=O)[C@H](NC(C)=O)CCc1cc(OC)c(OC)c(OC)c13
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?