You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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For the molecule named 2-[(3S,7R,8aS)-7-[2-(2-methoxyphenyl)imidazol-1-yl]-3,4,6,7,8,8a-hexahydro-1H-pyrrolo[2,1-c][1,4]oxazin-3-yl]-N,N-dimethylacetamide;formic acid by IUPAC nomenclature, provide its molecular formula.
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C22H30N4O5
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