Using COc1ccc(C(O)c2ccccc2)cc1, O=C(O)C1CN2CCC1CC2 to produce COc1ccc(C(OC(=O)C2CN3CCC2CC3)c2ccccc2)cc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.