COC1(OC)C[C@H](C)[C@@]23O[C@]24c2cc(O)c5c(c2N[C@H]3C#C/C=C\C#C[C@]14O)C(=O)c1ccccc1C5=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?