Ice-cold A.I. replaced an organic substance found in plants and animals (5,4)

I believe the answer is:

oleic acid

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'an organic substance found in plants and animals' is the definition.
I can't tell whether this defines the answer.

'ice-cold a i replaced' is the wordplay.
'replaced' indicates anagramming the letters.
'ice'+'cold'+'a'+'i'='icecoldai'
'icecoldai' is an anagram of 'OLEIC ACID'.

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I've seen this clue in The Hindu.

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