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What is the molecular formula of the molecule identified by methyl 2-[(2R)-2-[(1aS,4S,4aS,8aS)-4-(furan-3-yl)-4a-methyl-8-methylidene-2-oxo-4,5,6,7-tetrahydro-1aH-oxireno[2,3-d]isochromen-7-yl]-2,6,6-trimethyl-5-oxocyclohex-3-en-1-yl]acetate ?
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C27H32O7
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