You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
morpholin-4-yl-[4-(5,6,7,8-tetrahydro-4H-cyclohepta[b]thiophene-2-carbonyl)-2,3-dihydro-1,4-benzoxazin-2-yl]methanone is the IUPAC name of a molecule. Please give its molecular formula.
user
C23H26N2O4S
assistant