You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Please write the molecular formula of the molecule 1-[(11S)-7,8-difluoro-6,11-dihydrobenzo[c][1]benzothiepin-11-yl]-5-hydroxy-3-spiro[2.3]hexan-5-yl-2H-pyrido[2,1-f][1,2,4]triazine-4,6-dione .
user
C27H23F2N3O3S
assistant