You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Provide the molecular formula for the IUPAC named substance (7R,17R)-7,17-dimethyl-12-prop-2-enyl-6,9,15,18-tetraoxa-25,27-diazatetracyclo[21.3.1.05,26.019,24]heptacosa-1(26),2,4,19,21,23(27),24-heptaene .
user
C26H32N2O4
assistant