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The present investigation was aimed at exploring dual targeting of anti - HIV drug , zidovudine ( ZDV ) via sialic acid conjugated - mannosylated poly ( propyleneimine ) ( PPI ) dendritic nano - constructs .
 Chemical: zidovudine; Chemical: ZDV; Chemical: sialic acid; Chemical: mannosylated poly ( propyleneimine ); Chemical: PPI
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: zidovudine; Chemical: ZDV; Chemical: sialic acid; Chemical: mannosylated poly ( propyleneimine ); Chemical: PPI