Using COC(=O)Cn1c(=O)oc2c3cc(cc21)Nc1nc(ncc1Cl)Nc1cccc(c1)CC3 to produce O=C(O)Cn1c(=O)oc2c3cc(cc21)Nc1nc(ncc1Cl)Nc1cccc(c1)CC3, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.