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system
Can you give the molecular formula of the molecule (1R,2S,6R,14S,15R,19S)-11,15-dimethoxy-19-nitro-13-oxa-5-azahexacyclo[13.2.2.12,8.01,6.02,14.012,20]icosa-8(20),9,11,16-tetraene-5-carbaldehyde ?
user
C21H22N2O6
assistant