You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
2-[(2R,4aR,5S,7aS)-5-(2,3-dihydro-1H-inden-5-yloxymethyl)-2,3,4,4a,5,6,7,7a-octahydrocyclopenta[b]pyran-2-yl]-1,3-thiazole-4-carboxylic acid is the IUPAC name of a molecule. Please give its molecular formula.
user
C22H25NO4S
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