You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
What is the molecular formula of the molecule identified by (1S,2R,3S,4R)-1-(8-methyl-8,10,12,13,15,16-hexazatetracyclo[7.7.0.02,7.011,15]hexadeca-1(16),2,4,6,9,11,13-heptaen-14-yl)pentane-1,2,3,4,5-pentol ?
user
C16H18N6O5
assistant