C/C1=C\CC[C@@]2(C)O[C@@H]2C[C@@H]2[C@H](C/C(C)=C/CC1)OC(=O)C21CC1
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?