3-[10-butyl-4-[(E)-2-[4-[4-[[1-[[1-[2-[2-[4-[1-(2,5-dioxopyrrolidin-1-yl)oxycarbonyloxyethyl]-2-(hydroxymethyl)-5-nitrophenoxy]ethyl-methylazaniumyl]ethylamino]-1-oxo-6-(trimethylazaniumyl)hexan-2-yl]amino]-1-oxo-6-(trimethylazaniumyl)hexan-2-yl]amino]-4-oxobutoxy]phenyl]ethenyl]-2,2-difluoro-12-thiophen-2-yl-1-aza-3-azonia-2-boranuidatricyclo[7.3.0.03,7]dodeca-3,5,9,11-tetraen-6-yl]propane-1-sulfonate