You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Convert the IUPAC name of a molecule 1-[(6S,9aS)-4-methyl-8-[(1-methylindazol-7-yl)methyl]-6-[(4-methylphenyl)methyl]-2-prop-2-enyl-3,4,6,7,9,9a-hexahydropyrazino[2,1-c][1,2,4]triazin-1-yl]-N-benzylethenamine into molecular formula.
user
C36H45N7
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