Using NC1CC1, O=C(O)c1ccc(N2CCN(Cc3cnc4c(c3)NC(=O)[C@@H]3CCCN43)CC2)cc1 to produce O=C(NC1CC1)c1ccc(N2CCN(Cc3cnc4c(c3)NC(=O)[C@@H]3CCCN43)CC2)cc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.