Is there a way to separate the chains belong to each Biological assembly in a PDB file?

I want to separate the chain IDs which belong to specific Biological assemblies in a PDB file. As an Example PDB ID 1BRS has 3 Biological assemblies Biological assembly 1 : – chains A and D Biological assembly 2 : – Chains B and E Biological assembly 3 : – chains C and F

Is there a way (python Script) to get the Chain IDs separate which belong to each biological assembly as follows 1BRS_A:D 1BRS_B:E 1BRS_C:F No need to extract the chain coordinates. If I get the chain names, that will be enough. Thanks in advance