Using CCOC(=O)c1cc(OCCCN2CCN(c3cccc4sccc34)CC2)c2ccccc2n1 to produce O=C(O)c1cc(OCCCN2CCN(c3cccc4sccc34)CC2)c2ccccc2n1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.