You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
[4-[(E)-[[3-(4-amino-1,2,5-oxadiazol-3-yl)-5-(diethylaminomethyl)triazole-4-carbonyl]hydrazinylidene]methyl]-2-methoxyphenyl] acetate;hydrochloride is the IUPAC name of a molecule. Please give its molecular formula.
user
C20H26ClN9O5
assistant