Acetic acid, dichloro-, 5-[(dichloroacetyl)amino]-2,4-bis[[4-[(2-thiazolylamino)sulfonyl]phenyl]azo]-1-naphthalenyl ester, compd. with 4-[(4-imino-3-methyl-2,5-cyclohexadien-1-ylidene)(3-methylphenyl)methyl]-2-methylbenzenamine monohydrochloride (1:1) NSC323723