You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
ethane;1-[3-[6-[(4Z)-6-hydroxy-3-methylidenehepta-4,6-dienyl]-3,4,4a,5,7,8-hexahydro-2H-pyrano[3,2-c]pyridin-8a-yl]phenyl]ethanone;N-methylmethanamine is the IUPAC name of a molecule. Please give its molecular formula.
user
C30H50N2O3
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