8103
This tutorial review is intended to provide an overview of up - to - date published synthetic efforts and to summarize the effect of annulation on the properties of expanded and isomeric porphyrins .
 Chemical: porphyrins
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 Chemical: porphyrins