4-amino-5-cyano-6-ethoxy-N-[(4-methylsulfonylphenyl)methyl]pyridine-2-carboxamide
4-amino-5-cyano-6-ethoxy-N-[(4-methylsulfonylphenyl)methyl]-2-pyridinecarboxamide
4-amino-5-cyano-6-ethoxy-N-(4-mesylbenzyl)picolinamide