[Python] wbgapi: resolve country name

I'd like to use the wbgapi to get a list of countries with GDP per capita for 2021, with "normal" country names.

import wbgapi as wb

gdppercap=wb.data.DataFrame('NY.GDP.PCAP.CD', wb.region.members('WLD'))

# how do I pass the coder function to the rename method here, so that it returns the "WBG NAME"?
gdppercap['YR2021'].sort_values(ascending = False).rename(index = wb.economy.coder)


The coder function works like this:

wb.economy.coder(['ARG', 'Korea'])

ORIGINAL NAME WBG NAME ISO_CODE
ARG Argentina ARG
Korea Korea, Rep. KOR


But I don't understand how to isolate the second column, which is what I'm after.

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