(5s)-1-methyl-5-(1-oxido-3-pyridinyl)-2-pyrrolidinone 2-pyrrolidinone, 1-methyl-5-(1-oxido-3-pyridinyl)-, (5S)- 2-pyrrolidinone, 1-methyl-5-(3-pyridinyl)-, N-oxide, (S)- CPD-3185 cotinine N-oxide