Using CCOC(=O)Cc1nc(-c2ccc(OC)cc2)oc1-c1ccco1 to produce COc1ccc(-c2nc(CC(=O)O)c(-c3ccco3)o2)cc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.