Using NC1Cc2cc(Cl)ccc2N(Cc2ccccc2)C1, O=C(O)CCc1ccc2c(c1)OCO2 to produce O=C(CCc1ccc2c(c1)OCO2)NC1Cc2cc(Cl)ccc2N(Cc2ccccc2)C1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.