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What is the molecular formula of the molecule identified by (5S,8S,9R)-2-[(2S,3R)-3-[(Z)-but-1-enyl]oxiran-2-yl]-8-(3-fluorobenzoyl)-9-hydroxy-8-methoxy-3-methyl-1-oxa-7-azaspiro[4.4]non-2-ene-4,6-dione ?
user
C22H22FNO7
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