You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named (11S,12R,16S)-14-(5-chloro-2-methoxyphenyl)-11-(thiophene-2-carbonyl)-10,14-diazatetracyclo[8.6.0.02,7.012,16]hexadeca-2,4,6,8-tetraene-13,15-dione by IUPAC nomenclature, provide its molecular formula.
user
C26H19ClN2O4S
assistant