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GC/ITMS chromatograms of marine microbial crude extracts including blank control, standard, 298M(1), 457P(1), 474M(1), 476M(1) and 495M(1). (A) Mass peak of target compound in marine microbial crude extracts; (B) Mass peak of standard in database of GC-ITMS workstation. Arrow point denotes target compound.
