Patent ID: 7314952

Claim:
A compound represented by the following formula (4): A f (-G f -Q-R f ) n (4) wherein: A f is an n-valent group (A) having n hydrogen atoms bonded to carbon atoms of adamantane converted to connecting bonds, wherein hydrogen atoms not converted to connecting bonds, may be each substituted by an alkyl group, in which at least one of hydrogen atoms forming C—H bonds is substituted by a fluorine atom, R f : is an fluorinated monovalent organic group having at least two carbon atoms or a C 2-20 perfluoroalkyl group or a C 2-20 perfluoroalkyl group containing an etheric oxygen atom, n is an integer of from 1 to 4, G f is —CF 2 — or a single bond, and Q is —C(═O)O— or —O—C(═O)—.