You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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For the molecule named N'-ethyl-N-methyl-N'-[2-(10-methyl-13-oxa-3,4,6,7,10-pentazatricyclo[7.4.0.02,6]trideca-1(9),2,4,7-tetraen-5-yl)quinolin-8-yl]ethane-1,2-diamine;molecular hydrogen by IUPAC nomenclature, provide its molecular formula.
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C22H28N8O
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