COc1cc(CCc2ccccc2)c(C(=O)O)c(O)c1C/C=C(/C)CCC=C(C)C
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?