. . "oalkyl group having 1-10 carbon atoms, hydrogen atom, halogen atom other than fluorine atom, alkyl group having 1-10 carbon atoms, or monovalent organic group having an acid-dissociable group dissociable by the action of an acid, R11 individually represents a fluorine atom, fluoroalkyl group having 1-10 carbon atoms, hydrogen atom, halogen atom other than the fluorine atom, or alkyl group having 1" . .