(R)-3-(2-Propynyloxy)quinuclidine fumarate (1:1) 1-Azabicyclo(2.2.2)octane, 3-(2-propynyloxy)-, (R)-, (E)-2-butenedioate (1:1) 147025-54-5 3-(2-Propynyloxy)-1-azabicyclo(2.2.2)octane 2-butenedioate Talsaclidine fumarate Wal 2014 FU