Using CC(=O)Nc1nc(CCc2ccc(NC(=O)OC(C)(C)C)cc2)c(C(=O)O)s1, Nc1ccccc1 to produce CC(=O)Nc1nc(CCc2ccc(NC(=O)OC(C)(C)C)cc2)c(C(=O)Nc2ccccc2)s1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.