Using O=C1OC2(CCNCC2)c2ccccc21, O=C(Nc1cnc(-c2ccccc2)cn1)Oc1ccccc1 to produce O=C1OC2(CCN(C(=O)Nc3cnc(-c4ccccc4)cn3)CC2)c2ccccc21, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.