CC(C)=CCC1(CC=C(C)C)C(=O)C(C(=O)c2ccccc2)=C2OC(C)(C)CCC2(CC=C(C)C)C1=O
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?