The name/synonym for ligand TRP (curated from ChEBI, PubChem, and PDB databases):

1L-TRYPTOPHAN
2L-BETA-3-INDOLYLALANINE
3TRYPTOPHAN
4L-(-)-TRYPTOPHAN
5(2S)-2-AMINO-3-(1H-INDOL-3-YL)PROPANOIC ACID
6(S)-ALPHA-AMINO-1H-INDOLE-3-PROPANOIC ACID
7(S)-TRYPTOPHAN
8(S)-ALPHA-AMINO-BETA-(3-INDOLYL)-PROPIONIC ACID
9W
10TRP