(+-)-3-Hydroxy-1-(3-hydroxy-4-methoxybenzoyl)-2-pyrrolidinone (R,S)-3-Hydroxy-1-(3-hydroxy-4-methoxybenzoyl)-2-pyrrolidinone 2-Pyrrolidinone, 3-hydroxy-1-(3-hydroxy-4-methoxybenzoyl)-, (+-)- 84264-71-1