Using CCCCc1c2c(nc3c1CCc1cc(C=O)c(N)nc1-3)C(=Cc1ccccc1)CCC2, CO to produce CCCCc1c2c(nc3c1CCc1cc(C=O)c(N)nc1-3)C(=O)CCC2, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.