for the following products
Lithium (2R,5R,Z)-3-(2-hydroxyethylidene)-7-oxo-4-oxa-1-azabicyclo[3.2.0]heptane-2-carboxylate | Lithium [2r-(2alpha,3(Z),5alpha)]-3-(2-hydroxyethylidene)-4-oxa-7-oxo-1-azabicyclo[3.2.0]heptane-2-carboxylate and Clavulanate lithium
