COC(=O)c1c(OC)cc2cc3c(c(O)c2c1C)C(=O)C1(O)C(=O)C=C(OC)C(OC(=O)CC(C)N)=C1C3=O.Cl
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?