Using CCOP(=O)(OCC)c1cc2cc(-n3cccc3)c(Cl)cc2[nH]c1=O to produce O=c1[nH]c2cc(Cl)c(-n3cccc3)cc2cc1P(=O)(O)O, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.