Using C=CC(=O)O, CCc1cc2[nH]c3c(c2cc1OC)CCN=C3C to produce CCc1cc2[nH]c3c(c2cc1OC)CCN1C(=O)CCC=C31, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.