Using CCON, CC(=O)c1ccc2c(c1)ncn2-c1cccc(C2=CCCN(C)C2)c1 to produce CCON=C(C)c1ccc2c(c1)ncn2-c1cccc(C2=CCCN(C)C2)c1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.