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system
Provide the molecular formula for the IUPAC named substance tert-butyl (11R)-6,7-dichloro-4-morpholin-4-yl-2-oxo-9-oxa-1,5,13-triazatricyclo[9.4.0.03,8]pentadeca-3(8),4,6-triene-13-carboxylate .
user
C20H26Cl2N4O5
assistant