You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named 7-[4-(3-ethynylanilino)-7-methoxyquinazolin-6-yl]oxy-N-hydroxyheptanamide;[(3S)-morpholin-3-yl]methyl N-[4-[(3-fluorophenyl)methyl-(1H-indazol-5-yl)amino]-5-methylpyrrolo[2,1-f][1,2,4]triazin-6-yl]carbamate by IUPAC nomenclature, provide its molecular formula.
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C51H53FN12O7
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