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Selected-ion monitoring (SIM) chromatographs corresponding to authentic paraherquamide A (6) (m/z 494) (A), authentic paraherquamide B (m/z 464) (B), isolation from P. fellutanum culture (m/z 464 and 494) (C), and isolation from A. japonicus JV-23 (m/z 360, 464, and 494) (D).
