Went to deposit part of capital (4,4)

I believe the answer is:

left bank

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'part of capital' is the definition.
'left bank' can be an answer for 'part' (I have seen 'part of Paris' mean 'left bank' so perhaps 'part' could also mean 'left bank'). I am not certain of the 'of capital' bit.

'went to deposit' is the wordplay.
'went' becomes 'left' (as in leaving).
'to deposit' becomes 'bank' ('bank' can be a synonym of 'deposit').
'left'+'bank'='LEFT-BANK'

Can you help me to learn more?

(Other definitions for left bank that I've seen before include "area of Paris" , "intellectual environment?" , "artists' quarter" , "Artistic region of Paris" , "Parisian artistic quarter" .)

I've seen this clue in The Guardian.

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