Using CCO, O=c1[nH]c(-c2ccc3ccc(-c4ccccc4)nc3c2)c2c(Cl)nccn12 to produce CCOc1nc(-c2ccc3ccc(-c4ccccc4)nc3c2)c2c(Cl)nccn12, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.