text: Yo, listen up, I got a study to share,
  Rapid resolution liquid chromatography, I swear.
  Coupled with quadrupole time-of-flight tandem mass spectrometry,
  Identifyin' components and metabolites in rat urine, you see.
  
  Buyang Huanwu decoction, that's what they took,
  Administered orally, urine samples they took.
  Solid phase extraction, gettin' samples right,
  Accurate mass measurements, keepin' it tight.
  
  Within 5 ppm of error, they got the facts,
  Protonated molecules, nothin' they lack.
  Fragment ions droppin', givin' structural info,
  Breakin' down compounds, let the data flow.
  
  50 compounds detected, in just 20 minutes flat,
  12 parent compounds, 38 metabolites, that's where they're at.
  Hydroxysafflor yellow A, Paeoniflorin, and Amygdalin,
  Three prototype components, the rest from within.
  
  Radix Astragali, Radix Angelicae Sinensis, and Rhizoma Chuanxiong,
  They're the sources, where the metabolites belong.
  Glucuronidation and sulfation, pathways most significant,
  Isoflavonoids go through 'em, it's quite magnificent.
  
  Glutathione conjugation, glucuronidation, sulfation too,
  Phthalides takin' those paths, that's what they do.
  No saponin-related metabolites, they couldn't find,
  But this study, it's crucial, expandin' our mind.
  
  Structural info, metabolism of BYHWD they reveal,
  RRLC/ESI-Q-TOF-MS, a method that's real.
  Rapid and reliable, characterizin' herbs with ease,
  Uncoverin' metabolites, it's the way to appease.