Using COC(=O)CCc1ccc(OCCc2nc(-c3ccc(-c4ccccc4)nc3)oc2C)cc1C to produce Cc1cc(OCCc2nc(-c3ccc(-c4ccccc4)nc3)oc2C)ccc1CCC(=O)O, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.