You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
N-(2-aminophenyl)-4-[[1-[2-(2-hydroxyethylamino)-2-oxoethyl]-4-methylidene-1,3-dihydroisoquinolin-2-yl]methyl]benzamide is the IUPAC name of a molecule. Please give its molecular formula.
user
C28H30N4O3
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