Tetrodotoxin

(1R,5R,6R,7S,9R,11S,12R,13S,14S)-3-Amino-14-(hydroxymethyl)-8,10-dioxa-2,4-diazatetracyclo[7.3.1.1~7,11~.0~1,6~]tetradec-2-en-5,9,12,13,14-pentol

(1R,5R,6R,7S,9R,11S,12R,13S,14S)-3-Amino-14-(hydroxymethyl)-8,10-dioxa-2,4-diazatetracyclo[7.3.1.1~7,11~.0~1,6~]tetradec-2-ene-5,9,12,13,14-pentol

(1R,5R,6R,7S,9R,11S,12R,13S,14S)-3-Amino-14-(hydroxyméthyl)-8,10-dioxa-2,4-diazatétracyclo[7.3.1.1~7,11~.0~1,6~]tétradéc-2-ène-5,9,12,13,14-pentol

5,9:7,10a-Dimethano-10aH-[1,3]dioxocino[6,5-d]pyrimidine-4,7,10,11,12-pentol, 2-amino-1,4,4a,5,9,10-hexahydro-12-(hydroxymethyl)-, (4R,4aR,5S,7R,9S,10R,10aR,11S,12S)-

Tetrodotoxin

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