Using CCOC(=O)N1CCN2c3ccccc3Cn3c(cc4ccccc43)C2C1 to produce c1ccc2c(c1)Cn1c(cc3ccccc31)C1CNCCN21, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.