You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Convert the IUPAC name of a molecule (6R)-7-[[2-[[2-[(6-methyl-4-oxo-1H-pyridin-3-yl)oxy]acetyl]amino]-2-phenylacetyl]amino]-3-[(1-methyltetrazol-5-yl)sulfanylmethyl]-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid into molecular formula.
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C26H26N8O7S2
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