Using CCOC(=O)CCC(NC(=O)c1ccc(Nc2ncccn2)cc1)C(=O)OCC to produce O=C(O)CC[C@H](NC(=O)c1ccc(Nc2ncccn2)cc1)C(=O)O, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.