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Under IUPAC nomenclature, a molecule named 2-amino-9-N-[(3R,6S,7S,10S,16S)-10-[(4-methoxyphenyl)methyl]-7,14-dimethyl-2,5,9,12,15-pentaoxo-3-propan-2-yl-8-oxa-1,4,11,14-tetrazabicyclo[14.3.0]nonadecan-6-yl]-1-N-[(3R,6S,7S,16S)-10-[(4-methoxyphenyl)methyl]-7,14-dimethyl-2,5,9,12,15-pentaoxo-3-propan-2-yl-8-oxa-1,4,11,14-tetrazabicyclo[14.3.0]nonadecan-6-yl]-4,6-dimethyl-3-oxophenoxazine-1,9-dicarboxamide is given. What is its corresponding molecular formula?
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C70H86N12O18
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