You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
10-amino-14-(2-aminoethyl)-4,14,15-triazatetracyclo[7.6.1.02,7.013,16]hexadeca-1(15),2(7),3,5,9,11,13(16)-heptaen-8-one;propane The above is the IUPAC name of a molecule. Write its molecular formula.
user
C18H21N5O
assistant