You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Provide the molecular formula for the IUPAC named substance 2-[(3R,6aS,8R,10aS)-3-hydroxy-1-(pyridine-3-carbonyl)-3,4,6,6a,8,9,10,10a-octahydro-2H-pyrano[2,3-c][1,5]oxazocin-8-yl]-N-(cyclopropylmethyl)acetamide .
user
C21H29N3O5
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