Using CCOC(=O)CCc1cc2c(s1)C=Cc1ccccc1C2=C1CCNCC1 to produce O=C(O)CCc1cc2c(s1)C=Cc1ccccc1C2=C1CCNCC1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.