Using CCOC(=O)Cn1c2c(c3ccccc31)CN(C(=O)c1ccccc1)CC2 to produce O=C(O)Cn1c2c(c3ccccc31)CN(C(=O)c1cccc3ccccc13)CC2, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.