A functional group consisting of a nitrogen atom double-bonded to an oxygen and single-bonded to another oxygen.
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Benzenepropanoic acid, 2-nitro-b-(2-thienylthio)-
1,1-dichloro-2-methyl-2-(4-nitrophenyl)cyclopropane
acetic acid 3-phenyl-pyridin-2-ylmethyl ester
C14H15ClFNO5
(5S,6S)-5-(3-Chloro-phenyl)-6-nitro-5,6-dihydro-3H-furo[2,3-d]pyrimidin-4-one
