You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
[12-[(4-hydroxyphenyl)methyl]-18-methyl-11,17-dioxo-5-oxa-13,14,15,16-tetrathia-10,18-diazatetracyclo[10.4.2.01,10.03,9]octadeca-3,6-dien-8-yl] 3-hydroxy-4-methoxybenzoate The above is the IUPAC name of a molecule. Write its molecular formula.
user
C27H24N2O8S4
assistant