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Under IUPAC nomenclature, a molecule named (2R,5R)-5-[[(2S,5S,6S)-5-[[(2R)-2-benzylbutanoyl]amino]-2-(hydroxymethyl)-6-methyl-4-oxooctanoyl]amino]-2-[(2S)-butan-2-yl]-N-[(3S,4S,7S)-8-[[(10R,13R,14S,17S)-17-[(2S)-butan-2-yl]-10,14-dimethyl-9,12,16,19-tetraoxo-15-oxa-8,18-diazaspiro[6.12]nonadecan-13-yl]amino]-7-(hydroxymethyl)-3-methyl-5,8-dioxooctan-4-yl]-4-oxooctanediamide is given. What is its corresponding molecular formula?
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C65H103N7O15
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