Using c1ccc([P+](Cc2ccccn2)(c2ccccc2)c2ccccc2)cc1, O=Cc1c(-c2cccs2)c(=O)[nH]c2ccc(Br)cc12 to produce O=c1[nH]c2ccc(Br)cc2c(/C=C/c2ccccn2)c1-c1cccs1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.