Using Cc1cccc(C)c1N1c2ccccc2Cc2ccccc21, O=C=O to produce Cc1cccc(C)c1N1c2ccccc2C(C(=O)O)c2ccccc21, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.