MDMB-4en-PINACA/Creatinine:MRto:Pt:Urine:Qn:Confirm
mdmb-4en-pinaca/creatinine:mrto:pt:urine:qn:confirm
MDMB-4en-PINACA/Creatinine Confirm (U) [Mass ratio]
mdmb-4en-pinaca/creatinine confirm (u) [mass ratio]