Using CCc1ccc(CC(NC(=O)N2CCC(N3Cc4ccccc4NC3=O)CC2)C(=O)OC)cc1CC to produce CCc1ccc(CC(NC(=O)N2CCC(N3Cc4ccccc4NC3=O)CC2)C(=O)O)cc1CC, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.