188637-89-0 Sulfonium, (3-(((2'-(2-(((1-(chloromethyl)-1,2-dihydro-5-hydroxy-3H-benz(e)indol-3-yl)oxoacetyl)amino)ethyl)(2,4'-bithiazol)-4-yl)carbonyl)amino)propyl)dimethyl-, iodide, (S)-