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 8-[(E)-[[5-ethyl-4-[(E)-(7-hydroxy-4-methyl-2-oxochromen-8-yl)methylideneamino]-1,2,4-triazol-3-yl]hydrazinylidene]methyl]-7-hydroxy-4-methylchromen-2-one;lanthanum(3+);trihydrate .
user
C26H28LaN6O9+3
assistant