Acetic acid, dichloro-, 5-[(dichloroacetyl)amino]-2,4-bis[[4-[[(5-methyl-1,3,4-thiadiazol-2-yl)amino]sulfonyl]phenyl]azo]-1-naphthalenyl ester, compd. with 4-[[4-(dimethylamino)phenyl][4-(methylimino)-2,5-cyclohexadien-1-ylidene]methyl]-N,N-dimethylbenzenamine monohydrochloride (1:1) NSC323725