You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Can you give the molecular formula of the molecule buta-1,3-diynylperoxy-[4-[(8R,11S)-5-carbamoyl-11-(3-methoxy-3-oxopropyl)-16-nitro-7,10,13-trioxo-2-oxa-6,9,12-triazabicyclo[12.4.0]octadeca-1(14),15,17-trien-8-yl]butyl]azanium ?
user
C27H33N6O11+
assistant