Carboxylate, carboxylic acid generator, resist composition and method for producing resist pattern

A carboxylate represented by formula (I):

• wherein, in formula (I),
• L1 and L2 each independently represent a single bond or a hydrocarbon group having 1 to 28 carbon atoms which may have a substituent, and —CH2— included in the hydrocarbon group may be replaced by —O—, —S—, —SO2— or —CO—,
• A1 represents a ring represented by the following, —CH2— included in the ring may be replaced by —CO—, a hydrogen atom included in the ring may be substituted with an alkyl group having 1 to 6 carbon atoms or a hydroxy group, and one of two * represents a bonding site to L1 and the other one represents a bonding site to L2,
• Ar1 represents an aromatic hydrocarbon group having 6 to 10 carbon atoms, or a heterocyclic aromatic hydrocarbon group having 4 to 9 carbon atoms,
• R3 represents *—O—R10, *—O—CO—R10, *—O—CO—O—R10 or *—O-L10-CO—O—R10, and * represents a bonding site to Ar1,
• L10 represents an alkanediyl group having 1 to 6 carbon atoms,
• R10 represents an acid-labile group,
• R4 represents a halogen atom, a haloalkyl group having 1 to 12 carbon atoms, or a hydrocarbon group having 1 to 18 carbon atoms, the hydrocarbon group may have a substituent, and —CH2— included in the haloalkyl group and the hydrocarbon group may be replaced by —O—, —CO—, —S— or —SO2—,
• m4 represents an integer of 0 to 8, and when m4 is 2 or more, a plurality of R4 may be the same or different from each other, and
• Z+ represents an organic cation.