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GC-MS total ion chromatogram of the mixed oil distilled from the herbal compress mixed ingredients. The peaks of the main constituents were identified by comparing the molecular mass from mass spectra data of each compound with the NIST library (Version 2.2) as (1) α-pinene, (2) camphene, (3) β-pinene, (4) β-myrcene, (5) 3-carene (6) D-limonene, (7) camphor, (8) terpinene-4-ol, (9) β-citral and (10) α-citral.
