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system
What is the molecular formula of the molecule identified by 4-[[2-[(2-amino-3-sulfanylpropanoyl)amino]-3-(1H-imidazol-5-yl)propanoyl]amino]-5-[[1-carboxy-4-(diaminomethylideneamino)butyl]amino]-5-oxopentanoic acid ?
user
C20H33N9O7S
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