The molecule is an oxonium betaine that is the conjugate base of cyanidin 3-O-rutinoside, arising from selective deprotonation of the 5-hydroxy group on the chromene ring; major species at pH 7.3. It is a conjugate base of a cyanidin 3-O-rutinoside.
2-(3,4-dihydroxyphenyl)-5-hydroxy-3-[(2S,3R,4S,5S,6R)-3,4,5-trihydroxy-6-[[(2R,3R,4R,5R,6S)-3,4,5-trihydroxy-6-methyloxan-2-yl]oxymethyl]oxan-2-yl]oxychromen-7-one