COC1=C(C)C(=O)c2c(cc3c(c2O)C(C)(CCC=C(C)C)C(C)O3)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?