P-(4-((3-ETHYL-3H-BENZOXAZOL-2-YLIDENE)ETHYLIDENE)-4,5-DIHYDRO-3-METHYL-5-OXO-1H-PYRAZOL-1-YL)BENZENESULFONIC ACID
p-(4-((3-ethyl-3h-benzoxazol-2-ylidene)ethylidene)-4,5-dihydro-3-methyl-5-oxo-1h-pyrazol-1-yl)benzenesulfonic acid