You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
What is the molecular formula of the molecule [2-[(3S)-3-(furan-2-yl)-5-(4-methoxyphenyl)-3,4-dihydropyrazol-2-yl]-2-oxoethyl]-[2-(methylamino)-2-oxoethyl]azanium ?
user
C19H23N4O4+
assistant