CC(=O)OCC1OC(c2c(OC(C)=O)cc(C)c3c(=O)cc(/C(C(C)=O)=C(\C)O)oc23)C(OC(C)=O)C(OC(C)=O)C1OC(C)=O
A rotatable bond is defined as any single non-ring bond, attached to a non-terminal, non-hydrogen atom. How many bonds in the molecule are rotatable?