Using C1COCCN1, CC(=O)Cc1cccc(-c2ccn3ccnc3c2)n1 to produce CC(Cc1cccc(-c2ccn3ccnc3c2)n1)N1CCOCC1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.