You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
What is the SMILES representation for 5-(4-ethylanilino)-N-[2-(2-fluorophenyl)ethyl]pyrazine-2-carboxamide ?
user
CCC1=CC=C(NC2=CN=C(C(=O)NCCC3=CC=CC=C3F)C=N2)C=C1
assistant