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What is the molecular formula of the molecule [[12-ethyl-16-(2-methylbenzoyl)-7-oxo-3-oxa-12-azatetracyclo[9.7.0.02,8.013,18]octadeca-1(11),2(8),5,9,13(18),14,16-heptaen-6-yl]amino] pentanoate ?
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C31H30N2O5
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