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1. An actinic ray-sensitive or radiation-sensitive resin composition containing (A) a compound represented by the following formula (1-1): wherein R1 represents an alkyl group, an alkenyl group, an alkoxy group, an aliphatic cyclic group, an aromatic hydrocarbon group or a heterocyclic group, R2 represents a hydrogen atom, an alkyl group, an alkoxy group, an alkenyl group, an aliphatic cyclic group, an aromatic hydrocarbon group, a heterocyclic group, a cyano group or an alkoxycarbonyl group, R3 represents an alkylene group where one or more —CH2— groups may be substituted with an ether group, a carbonyl group, an ester group, an amide group, a methane group or a urea group, R4 represents an alkyl group, an alkenyl group, an aliphatic cyclic group, an arylcarbonylalkyl group, an aryloxycarbonylalkyl group or an alkoxycarbonylalkyl group, R1 and R2 may combine with each other to form a ring, and Y− represents an anion.
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