You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
ethyl 2-amino-3-[[1-[2-[[4-methyl-2-(methylamino)pentanoyl]amino]acetyl]piperidin-4-yl]amino]-3-oxopropanoate is the IUPAC name of a molecule. Please give its molecular formula.
user
C19H35N5O5
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