Using Cc1ncc(C)n2nc(C[P+](c3ccccc3)(c3ccccc3)c3ccccc3)nc12, O=Cc1c[nH]c(-c2ccccc2)n1 to produce Cc1ncc(C)n2nc(CCc3c[nH]c(-c4ccccc4)n3)nc12, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.