(2R,9S)-annullatin H + A <=> (2R)-annullatin F + AH2
(2r,9s)-annullatin h + a <=> (2r)-annullatin f + ah2
(2R,9S)-annullatin H + A <=> (2R)-annullatin F + AH2
(2r,9s)-annullatin h + a <=> (2r)-annullatin f + ah2