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 6-(4-hydroxycyclohepta-1,4,6-trien-1-yl)-2-methyl-8-morpholin-4-ylimidazo[1,2-a]pyrazine-3-carbonitrile .
user
C19H19N5O2
assistant