You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(2R)-4-methyl-2-[[(2R,3R)-2-(2-propan-2-ylpyrazol-3-yl)oxane-3-carbonyl]amino]pentanoic acid The above is the IUPAC name of a molecule. Write its molecular formula.
user
C18H29N3O4
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