Need Urgent Help from Fluent People
 

I am written this type because no body can give the answer. So i write this type of word. Actaully I want to make PDF file for Fuel-oil-air. But when i set the species in Dataspecies there is no C23H30 which chemical formula of the fuel-oil-air and the maximum carbon is C12H23 . What I can take for that. Please help me.