You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Please write the molecular formula of the molecule (2-methylfuran-3-yl)-[(3R,5R)-3-[(6-methylpyridazin-3-yl)amino]-1-oxa-9-azaspiro[4.5]decan-9-yl]methanone .
user
C19H24N4O3
assistant