Using CCCOC(=O)Cc1c2n(c3ccccc13)CC(n1cc(Cc3ccccc3)nn1)CC2 to produce O=C(O)Cc1c2n(c3ccccc13)CC(n1cc(Cc3ccccc3)nn1)CC2, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.