Using O=Cc1c[nH]c(=O)c2ccccc12, c1ccc([P+](Cc2cccnc2)(c2ccccc2)c2ccccc2)cc1 to produce O=c1[nH]cc(C=Cc2cccnc2)c2ccccc12, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.