Using O=C1OCc2cccc(Cl)c21, COc1nc(Cl)nc(OC)n1 to produce COc1nc(OC)nc(C2(c3nc(OC)nc(OC)n3)OC(=O)c3c(Cl)cccc32)n1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.