Using O=c1nnc2c(OCc3ccccc3)c(=O)n(-c3ccccc3)c3cc(Cl)ccc3n1-2 to produce O=c1nnc2c(O)c(=O)n(-c3ccccc3)c3cc(Cl)ccc3n1-2, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.