Using O=C(O)CCCc1ccccc1, Cc1c(C)c2c(c(C)c1N)CC(C)(CN1CCNCC1)O2 to produce Cc1c(C)c2c(c(C)c1N)CC(C)(CN1CCN(C(=O)CCCc3ccccc3)CC1)O2, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.