4-Pyridinecarboxamide, N-(5-((2-hydroxyphenyl)methylene)-4-oxo-2-thioxo-3-thiazolidinyl)- 68710-95-2 N-(5-((2-Hydroxyphenyl)methylene)-4-oxo-2-thioxo-3-thiazolidinyl)-4-pyridinecarboxamide