Red sensitizing dye SR10#;3,3'-Di(2-hydroxyethyl)-5,5'-dimethoxy-9-ethylthiacarbocyanine chloride;3-(2-Hydroxyethyl)-2-[2-[[3-(2-hydroxyethyl)-5-methoxy-2-benzothiazolinylidene]methyl]-1-butenyl]-5-methoxybenzothiazolium chloride;3-(2-hydroxyethyl)-2-(2-{[3-(2-hydroxyethyl)-5-met
hoxy-2,3-dihydro-1,3-benzothiazol-2-ylidene]meth
yl}but-1-en-1-yl)-5-methoxy-1,3-benzothiazol-3-iu
m chloride