You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
N-[(2S,3R,4R,6R)-6-(12,14-dioxo-3,13,23-triazahexacyclo[14.7.0.02,10.04,9.011,15.017,22]tricosa-1,4,6,8,10,15,17,19,21-nonaen-3-yl)-3-hydroxy-2-methyloxan-4-yl]formamide The above is the IUPAC name of a molecule. Write its molecular formula.
user
C27H22N4O5
assistant