A resist composition comprising (A) an acid generator represented by formula (1): wherein S.sub.1 to S.sub.8 each independently represents a substituent; a, n, m, l, k, o, p, q and r each independently represents an integer of 0 to 2; X represents a single bond or a divalent linking group; R.sub.1 and R.sub.2 each independently represents a hydrogen atom or a substituent, and R.sub.1 and R.sub.2 may combine with each other to represent a single bond or a divalent linking group; and Y.sup.- and Z.sup.- each independently represents an organic sulfonate anion.

 
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