You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Convert the IUPAC name of a molecule 4-(4-methyl-1,4-diazepan-1-yl)-5-(2-prop-2-ynoxyethyl)-8,13,16,21-tetraoxa-3,5-diazatetracyclo[13.6.0.02,6.07,14]henicosa-1(15),2(6),3,7(14),10,18-hexaene-9,12,17,20-tetrone into molecular formula.
user
C26H24N4O9
assistant