You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
What is the molecular formula of the compound with this IUPAC name 12-hydroxy-13-methoxy-8-(methylaminomethyl)-5-(N'-methylcarbamimidoyl)-5-azahexacyclo[10.10.1.02,11.02,18.03,8.03,21]tricosa-1(23),9-diene-23-carboxylic acid ?
user
C28H42N4O4
assistant