You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
2-[[5-(4-bromophenyl)-3,3-dibutyl-1,1-dihydroxy-7-methylsulfanyl-2,4-dihydro-1lambda4,5-benzothiazepin-8-yl]oxy]acetic acid is the IUPAC name of a molecule. Please give its molecular formula.
user
C26H36BrNO5S2
assistant