"Any of these aralkyl groups may also be partially substituted with a halogen atom such as a fluorine atom, chlorine atom, bromine atom, iodine atom and the like, an alkoxy group such as a methoxy group, ethoxy group and the like, an aryloxy group such as a phenoxy group and the like, an aralkyloxy group such as a benzyloxy group and the like, etc." . . . . .