Using O=c1c2c(nc3ccc(Cl)cn13)CCC2, COc1cc(C=O)cc(OC)c1OC to produce COc1cc(C=C2CCc3c2nc2ccc(Cl)cn2c3=O)cc(OC)c1OC, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.