Compound, resin, resist composition and method for producing resist pattern

A resist composition comprising,

• a resin including a first structural unit derived from a compound represented by formula (I) and a second structural unit represented by formula (a2-A), wherein
• a content of the first structural unit is 3 to 50 mol % based on all monomers in the resin, and
• a content of the second structural unit is 15 to 50 mol % based on all the monomers in the resin
• wherein, in formula (I),
• R1 represents an alkyl group having 1 to 6 carbon atoms which may have a halogen atom, a hydrogen atom or a halogen atom,
• L1 represents a single bond or —CO—O—* wherein * represents a bond to the benzene ring,
• R3 represents an alkyl group having 1 to 6 carbon atoms, and —CH2— included in the alkyl group may be replaced by —O— or —CO—,
• R4 represents a fluorine atom, an alkyl fluoride group having 1 to 6 carbon atoms or an alkyl group having 1 to 12 carbon atoms, and —CH2— included in the alkyl fluoride group and the alkyl group may be replaced by —O— or —CO—,
• R5 represents a hydrogen atom, an alkylcarbonyl group having 2 to 6 carbon atoms or a first acid-labile group,
• m2 represents an integer of 1 to 3,
• m3 represents an integer of 1 to 3, and when m3 is 2 or more, a plurality of R3 may be the same or different from each other,
• m4 represents an integer of 0 to 2, and when m4 is 2, two R4 may be the same or different from each other, and
• m5 represents 1 or 2, and when m5 is 2, two R5 may be the same or different from each other,
• in which 3≤m2+m3+m4+m5≤5;
• and
• wherein, in formula (a2-A),
• Ra50 represents a hydrogen atom, a halogen atom or an alkyl group having 1 to 6 carbon atoms which may have a halogen atom,
• Ra51 represents hydroxy group,
• Aa50 represents a single bond or *—Xa51-(Aa52-Xa52)nb—, and * represents a bond to carbon atoms to which —Ra50 is bonded,
• Aa52 represents an alkanediyl group having 1 to 6 carbon atoms,
• Xa51 and Xa52 each independently represent —O—, —CO—O— or —O—CO—,
• nb represents 0 or 1, and
• mb represents an integer of 0 to 4, and when mb is an integer of 2 or more, a plurality of Ra51 may be the same or different from each other.