You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Please write the molecular formula of the molecule (2S)-4-[[(1S,2S,6R,14R)-2-[(3S)-3-carboxy-3-hydroxypropanoyl]oxy-9-hydroxy-15-methyl-7-oxa-15-azapentacyclo[10.6.1.01,6.02,14.08,19]nonadeca-4,8,10,12(19)-tetraen-5-yl]oxy]-2-hydroxy-4-oxobutanoic acid .
user
C26H29NO12
assistant