(E)-2-(2-(6-Hydroxy-7-(morpholinomethyl)-2,3-dihydro-1H-xanthen-4-yl)vinyl)-3,3-dimethyl-1-propyl-3H-indol-1-ium iodide, Lysosome‐ argeting near‐infrared ratiometric fluorescent probe(E)-2-(2-(6-羟基-7-(吗啉代)-2,3-二氢-1H-呫吨-4-基)乙烯基)-3,3-二甲基-1-丙基-3H-吲哚-1-碘化物