ACN	acetonitrile
AGC	automatic gain control
AP	apical
BL	basolateral
3CLpro	3-chymotrypsin-like protease
CoV	Coronavirus
DDA	data-dependent acquisition
EC	(-)-epicatechin EC
ECG	(-)-epicatechin-3-gallate (ECG)
EGC	(-)-epigallocatechin (EGC)
EGCG	(-)-epigallocatechin-3-gallate (EGCG)
ESI	electrospray ionization
FWHM	full width at half maximum
GAE	gallic acid equivalent
HCD	higher energy collision dissociation
IA	inhibition activity
HRMS	high-resolution mass spectrometry
MeOH	methanol
MRS	De Man, Rogosa, and Sharpe
MS	mass spectrometry
NCE	normalized collision energy
PLpro	papain-like protease
RT	room temperature
RP-LC	reversed-phase liquid chromatography
S	spike protein