Getting chemical systems

Hi, I have 50000 structures, many of them have different chemical systems, but the number of elements in each structure is the same. Before, I wanted to set a list for the elements in each structures, and use mp_entries = MPRester(“I API key”).get_entries_in_chemsys([el.symbol for el in elements]) in the for loop, but I realised that this will cause problems to the MP server, so is there any method to do with getting chemical system in one time for these different structures?

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