Using CC(=O)O, COC(=O)[C@@H](Cc1ccc(N)c(N)c1)NC(=O)OCc1ccccc1 to produce COC(=O)[C@@H](Cc1ccc2[nH]c(C)nc2c1)NC(=O)OCc1ccccc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.