Using Cn1nccc1-c1nn(-c2ccccc2)cc(O)c1=O, OCCc1ccc2ccccc2n1 to produce Cn1nccc1-c1nn(-c2ccccc2)cc(OCCc2ccc3ccccc3n2)c1=O, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.