DELTORPHIN I

H-GLY-PHE-LEU-OH

3-苯基-2-氧代己内酰脲

2,4-dihydro-1H-pyrazino[2,1-b]quinazoline-3,6-dione

(6-氯-1H-苯并咪唑-2-甲基)-氨基甲酸叔丁酯