CC(=O)OCC(OC(C)=O)C(OC(C)=O)C(OC(C)=O)C(/C=N/N(C(C)=O)S(=O)(=O)c1ccc(/C=C2\NC(=O)N(C)C2=O)cc1)OC(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?