You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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For the molecule named methyl 2-[[6-[[4-[6-(2-methoxy-2-oxoethoxy)iminocyclohexa-2,4-dien-1-yl]oxy-1,3,5-triazin-2-yl]oxy]cyclohexa-2,4-dien-1-ylidene]amino]oxyacetate by IUPAC nomenclature, provide its molecular formula.
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C21H21N5O8
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