Denotes the type of hydrogen atoms in a nuclear magnetic resonance (NMR) spectrum.
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(3E)-1-benzoyl-3-(dimethylamino)methylidenepyrrolidin-2-one
7-methyl-5-phenyl-2,3-dihydro-5H-thiazolo<3,2-a>pyrimidine-6-carboxylic acid ethyl ester