You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Name the molecular formula for the molecule established as 6-ethyl-7-hydroxy-4-[[4-(2-hydroxyphenyl)piperazin-1-ium-1-yl]methyl]chromen-2-one using the IUPAC nomenclature.
user
C22H25N2O4+
assistant