Using O=C(O)CCCCCc1ccccc1, COC(=O)c1cc2c(o1)CNCC2 to produce COC(=O)c1cc2c(o1)CN(C(=O)CCCCCc1ccccc1)CC2, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.