trifluoromethanesulfonic acid 2-[4-[3-(1H-indol-3-yl)-2(E)-propenoylamino]butyl]-1,2,3,4-tetrahydro-7-isoquinolinyl ester; 3-(1H-Indol-3-yl)-N-[4-[7-(trifluoromethylsulfonyloxy)-1,2,3,4-tetrahydroisoquinolin-2-yl]butyl]-2(E)-propenamide