You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
1-[[(2S,3S)-5-[(2S)-1-hydroxypropan-2-yl]-8-(3-methoxyprop-1-ynyl)-3-methyl-6-oxo-3,4-dihydro-2H-pyrido[2,3-b][1,5]oxazocin-2-yl]methyl]-3-(4-methoxyphenyl)-1-methylurea The above is the IUPAC name of a molecule. Write its molecular formula.
user
C27H34N4O6
assistant