You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
What is the molecular formula of the molecule identified by 12-(6-methoxypyridine-2-carbonyl)-N-methyl-2-oxo-9-oxa-1,12-diazatricyclo[15.2.2.03,8]henicosa-3,5,7-triene-17-carboxamide ?
user
C27H34N4O5
assistant