(1S*,2R*,3S*,5S*,7a*R)-1,2-dihydroxy-3-hydroxymethyl-5-methylpyrrolizidine 1H-pyrrolizine-1,2-diol, hexahydro-3-(hydroxymethyl)-5-methyl-, (1S,2R,3S,5S,7aR)- 3-Hydroxymethyl-5-methyl-hexahydro-pyrrolizine-1,2-diol Hyacinthacine A4 InChI=1/C9H17NO3/c1-5-2-3-6-8(12)9(13)7(4-11)10(5)6/h5-9,11-13H,2-4H2,1H3/t5-,6+,7-,8-,9+/m0/s rel-(1R,2S,3R,5R,7aS)-3-(hydroxymethyl)-5-methylhexahydro-1H-pyrrolizine-1,2-diol