CC(=O)OC1C[C@@H](C)C2(CC(c3ccoc3)OC2=O)C2CCC(O)C3(CO3)C12CO
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?