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What is the molecular formula of the molecule 3-[[(2S)-1-[2-[[(4R,4aR,7aR,12bS)-3-methyl-7-oxo-1,2,4,4a,5,6,7a,13-octahydro-4,12-methanobenzofuro[3,2-e]isoquinolin-9-yl]oxycarbonyl-ethylamino]ethylamino]-5-(diaminomethylideneamino)-1-oxopentan-2-yl]amino]-3-oxopropanoic acid ?
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C31H43N7O8
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