Chemical Name: (S)-2-(2-(2-(4-(2-(4-(((2-amino-4-oxo-4,8-dihydropteridin-6-yl)methyl)amino)benzamido)-2-carboxyethyl)phenoxy)-3-(2-(3,3-dimethyl-5-sulfo-1-(4-sulfobutyl)indolin-2-ylidene)ethylidene)cyclohex-1-en-1-yl)vinyl)-3,3-dimethyl-1-(4-sulfobutyl)-3H-indol-1-ium-5-sulfonate