lycorine

from The Century Dictionary.

• noun A colorless crystalline alkaloid, C₃₂H₃₂O₈N₂, contained in Lycoris radiata (Nerine japanica), melting at 250° C. It affects the central nervous system.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun chemistry A toxic crystalline alkaloid that inhibits protein synthesis, found in several plant species