Using O=CO, CCO[C@@H](Cc1ccc(OCCc2ccc(N)cc2)cc1)C(=O)O to produce CCO[C@@H](Cc1ccc(OCCc2ccc(NC=O)cc2)cc1)C(=O)O, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.