uorine 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 fluorine atom, or alkyl group having 1-10 carbon atoms, provided that at least one of seven R10 groups and 2i R11 groups r