You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named 2-[[5-(2-cyclopentylacetyl)-11-hydroxy-13-oxo-8-thia-1,5,10-triazatricyclo[7.4.0.02,7]trideca-2(7),9,11-triene-12-carbonyl]amino]acetic acid by IUPAC nomenclature, provide its molecular formula.
user
C19H22N4O6S
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