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These newly designed PDE2 inhibitors bind to the PDE2 enzyme in a cGMP - like binding mode orthogonal to the cAMP - like binding mode found in PDE4 .
 Chemical: cGMP; Chemical: cAMP
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: cGMP; Chemical: cAMP