Using O=C([O-])O, CCOC(=O)C1(C2NCCc3c2[nH]c2ccc(Cl)cc32)CCC1 to produce CCOC(=O)C1(C2c3[nH]c4ccc(Cl)cc4c3CCN2C)CCC1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.