Before revision:  Here we propose finite state expansion (FSE), an analytical method that mediates between the microscopic and the macroscopic interpretations of a chemical reaction network by coupling the master equation dynamics of a chosen subset of the discrete state space with the  population dynamics of the DRE.
After revision:  Here we propose finite state expansion (FSE), an analytical method mediating between the microscopic and the macroscopic interpretations of a chemical reaction network by coupling the master equation dynamics of a chosen subset of the discrete state space with the population dynamics of the DRE.