Feel rule needs changing about new carbon molecule (9)

I believe the answer is:

fullerene

'carbon molecule' is the definition.
(type of carbon molecule)

'feel rule needs changing about new' is the wordplay.
'needs changing' is an anagram indicator (I've seen this in other clues).
'about' means one lot of letters goes inside another.
'new' becomes 'n' (common abbreviation eg NT for New Testament).
'feel'+'rule'='feelrule'
'feelrule' with letters rearranged gives 'fulleree'.
'fulleree' placed around 'n' is 'FULLERENE'.

I've seen this clue in The Guardian.

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